1
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Xu Y, Han L, Jiang W, Zuo Z, Pan S, Fleischer A, Ueda K, Wu J. Attosecond ionic photoionization spectroscopy. OPTICS LETTERS 2024; 49:3412-3415. [PMID: 38875633 DOI: 10.1364/ol.523947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 05/15/2024] [Indexed: 06/16/2024]
Abstract
Photoionization is one of the most fundamental processes in light-matter interaction. Advanced attosecond photoelectron spectroscopy provides the possibility to characterize the ultrafast photoemission process in an extremely short attosecond time scale. Following scattering symmetry rules, residual ions encode ultrafast photoionization prints at the instant of electron removal forming an alternative electron emission chronoscope. Here, we experimentally illustrate the attosecond ion reconstruction of attosecond beating by interference of two-photon transition (RABBIT)-like interferometry through the development of high-resolution ion momentum detection in atomic photoionization processes. Our ion interferometry presents identical momentum- and time-dependent scattering phase shift, as we observed in photoelectron spectroscopy, and thus demonstrates that ion interferometry can be a possible alternative attosecond approach to resolve the photoionization process, without the electron homogeneity limitation.
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2
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Clarke CJ, Verlet JRR. Dynamics of Anions: From Bound to Unbound States and Everything In Between. Annu Rev Phys Chem 2024; 75:89-110. [PMID: 38277700 DOI: 10.1146/annurev-physchem-090722-125031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2024]
Abstract
Gas-phase anions present an ideal playground for the exploration of excited-state dynamics. They offer control in terms of the mass, extent of solvation, internal temperature, and conformation. The application of a range of ion sources has opened the field to a vast array of anionic systems whose dynamics are important in areas ranging from biology to star formation. Here, we review recent experimental developments in the field of anion photodynamics, demonstrating the detailed insight into photodynamical and electron-capture processes that can be uncovered. We consider the electronic and nuclear ultrafast dynamics of electronically bound excited states along entire reaction coordinates; electronically unbound states showing that photochemical concepts, such as chromophores and Kasha's rule, are transferable to electron-driven chemistry; and nonvalence states that straddle the interface between bound and unbound states. Finally, we consider likely developments that are sure to keep the field of anion dynamics buoyant and impactful.
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Affiliation(s)
- Connor J Clarke
- Department of Chemistry, Durham University, Durham, United Kingdom;
| | - Jan R R Verlet
- Department of Chemistry, Durham University, Durham, United Kingdom;
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3
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Wanie V, Bloch E, Månsson EP, Colaizzi L, Ryabchuk S, Saraswathula K, Ordonez AF, Ayuso D, Smirnova O, Trabattoni A, Blanchet V, Ben Amor N, Heitz MC, Mairesse Y, Pons B, Calegari F. Capturing electron-driven chiral dynamics in UV-excited molecules. Nature 2024; 630:109-115. [PMID: 38778116 PMCID: PMC11153151 DOI: 10.1038/s41586-024-07415-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 04/11/2024] [Indexed: 05/25/2024]
Abstract
Chiral molecules, used in applications such as enantioselective photocatalysis1, circularly polarized light detection2 and emission3 and molecular switches4,5, exist in two geometrical configurations that are non-superimposable mirror images of each other. These so-called (R) and (S) enantiomers exhibit different physical and chemical properties when interacting with other chiral entities. Attosecond technology might enable influence over such interactions, given that it can probe and even direct electron motion within molecules on the intrinsic electronic timescale6 and thereby control reactivity7-9. Electron currents in photoexcited chiral molecules have indeed been predicted to enable enantiosensitive molecular orientation10, but electron-driven chiral dynamics in neutral molecules have not yet been demonstrated owing to the lack of ultrashort, non-ionizing and perturbative light pulses. Here we use time-resolved photoelectron circular dichroism (TR-PECD)11-15 with an unprecedented temporal resolution of 2.9 fs to map the coherent electronic motion initiated by ultraviolet (UV) excitation of neutral chiral molecules. We find that electronic beatings between Rydberg states lead to periodic modulations of the chiroptical response on the few-femtosecond timescale, showing a sign inversion in less than 10 fs. Calculations validate this and also confirm that the combination of the photoinduced chiral current with a circularly polarized probe pulse realizes an enantioselective filter of molecular orientations following photoionization. We anticipate that our approach will enable further investigations of ultrafast electron dynamics in chiral systems and reveal a route towards enantiosensitive charge-directed reactivity.
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Affiliation(s)
- Vincent Wanie
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany.
| | - Etienne Bloch
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, Talence, France
| | - Erik P Månsson
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany
| | - Lorenzo Colaizzi
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany
- Physics Department, Universität Hamburg, Hamburg, Germany
- Department of Physics, Politecnico di Milano, Milano, Italy
| | - Sergey Ryabchuk
- Physics Department, Universität Hamburg, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Universität Hamburg, Hamburg, Germany
| | - Krishna Saraswathula
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany
- Physics Department, Universität Hamburg, Hamburg, Germany
| | - Andres F Ordonez
- Department of Physics, Imperial College London, London, UK
- School of Physical and Chemical Sciences, Queen Mary University of London, London, UK
| | - David Ayuso
- Department of Physics, Imperial College London, London, UK
- Max-Born-Institut, Berlin, Germany
- School of Physical and Chemical Sciences, Queen Mary University of London, London, UK
| | - Olga Smirnova
- Max-Born-Institut, Berlin, Germany
- Technische Universität Berlin, Berlin, Germany
| | - Andrea Trabattoni
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany
- Institute of Quantum Optics, Leibniz Universität Hannover, Hannover, Germany
| | - Valérie Blanchet
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, Talence, France
| | - Nadia Ben Amor
- CNRS, UPS, LCPQ (Laboratoire de Chimie et Physique Quantiques), FeRMI, Toulouse, France
| | - Marie-Catherine Heitz
- CNRS, UPS, LCPQ (Laboratoire de Chimie et Physique Quantiques), FeRMI, Toulouse, France
| | - Yann Mairesse
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, Talence, France
| | - Bernard Pons
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, Talence, France.
| | - Francesca Calegari
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany.
- Physics Department, Universität Hamburg, Hamburg, Germany.
- The Hamburg Centre for Ultrafast Imaging, Universität Hamburg, Hamburg, Germany.
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4
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Boyer A, Loriot V, Nandi S, Lépine F. Probing Photoionization Dynamics in Acetylene with Angle-Resolved Attosecond Interferometry. J Phys Chem A 2024; 128:840-847. [PMID: 38277696 DOI: 10.1021/acs.jpca.3c06533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2024]
Abstract
Photoionization of acetylene by extreme ultraviolet light results in a stand-alone contribution from the outermost valence orbital, followed by well-separated photoelectron bands from deeper molecular orbitals. This makes acetylene an ideal candidate for probing the photoionization dynamics in polyatomic molecules free from the spectral congestion often arising after interaction with an attosecond pulse train. Here, using an angle-resolved attosecond interferometric technique, we extract the photoionization time delays for the outermost valence orbital in acetylene relative to an atomic target, namely argon. Compared to argon, the photoemission from the acetylene molecule is found to be advanced by almost 28 attoseconds. The strong variation of the relative photoionization time delays as a function of the photoemission angle was interpreted using an analytical model based on semiclassical approximations to be the interplay between different short-range potentials along and perpendicular to the molecular axis. Our results highlight the importance of using attosecond time-resolved measurements to probe the nonspherical nature of the molecular potential, even in the case of relatively small, linear systems.
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Affiliation(s)
- Alexie Boyer
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, Villeurbanne F-69622, France
| | - Vincent Loriot
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, Villeurbanne F-69622, France
| | - Saikat Nandi
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, Villeurbanne F-69622, France
| | - Franck Lépine
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, Villeurbanne F-69622, France
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5
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Chen Y, Haase D, Manz J, Wang H, Yang Y. From chiral laser pulses to femto- and attosecond electronic chirality flips in achiral molecules. Nat Commun 2024; 15:565. [PMID: 38233379 PMCID: PMC10794217 DOI: 10.1038/s41467-024-44807-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 01/03/2024] [Indexed: 01/19/2024] Open
Abstract
Chirality is an important topic in biology, chemistry and physics. Here we show that ultrashort circularly polarized laser pulses, which are chiral, can be fired on achiral oriented molecules to induce chirality in their electronic densities, with chirality flips within femtoseconds or even attoseconds. Our results, obtained by quantum dynamics simulations, use the fact that laser pulses can break electronic symmetry while conserving nuclear symmetry. Here two laser pulses generate a superposition of three electronic eigenstates. This breaks all symmetry elements of the electronic density, making it chiral except at the periodic rare events of the chirality flips. As possible applications, we propose the combination of the electronic chirality flips with Chiral Induced Spin Selectivity.
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Affiliation(s)
- Yunjiao Chen
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan, 030006, China
| | - Dietrich Haase
- Institut für Chemie und Biochemie, Freie Universität Berlin, 14195, Berlin, Germany
| | - Jörn Manz
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan, 030006, China.
- Institut für Chemie und Biochemie, Freie Universität Berlin, 14195, Berlin, Germany.
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China.
| | - Huihui Wang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan, 030006, China.
| | - Yonggang Yang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan, 030006, China.
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China.
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6
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Fu Y, Wang B, Wang K, Tang X, Li B, Yin Z, Han J, Lin CD, Jin C. Controlling laser-dressed resonance line shape using attosecond extreme-ultraviolet pulse with a spectral minimum. Proc Natl Acad Sci U S A 2024; 121:e2307836121. [PMID: 38170749 PMCID: PMC10786267 DOI: 10.1073/pnas.2307836121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 12/01/2023] [Indexed: 01/05/2024] Open
Abstract
High-harmonic generation from a gas target exhibits sharp spectral features and rapid phase variation near the Cooper minimum. By applying spectral filtering, shaped isolated attosecond pulses can be generated where the pulse is split into two in the time domain. Using such shaped extreme-ultraviolet (XUV) pulses, we theoretically study attosecond transient absorption (ATA) spectra of helium [Formula: see text] autoionizing state which is resonantly coupled to the [Formula: see text] dark state by a time-delayed infrared laser. Our simulations show that the asymmetric [Formula: see text] Fano line shape can be readily tuned into symmetric Lorentzian within the time delay of a few tens of attoseconds. Such efficient control is due to the destructive interference in the generation of the [Formula: see text] state when it is excited by a strongly shaped XUV pulse. This is to be compared to prior experiments where tuning the line shape of a Fano resonance would take tens of femtoseconds. We also show that the predicted ATA spectral line shape can be observed experimentally after propagation in a gas medium. Our results suggest that strongly shaped attosecond XUV pulses offer the opportunity for controlling and probing fine features of narrow resonances on the few-ten attoseconds timescale.
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Affiliation(s)
- Yong Fu
- Department of Applied Physics, Nanjing University of Science and Technology, Nanjing, Jiangsu210094, China
| | - Bincheng Wang
- Department of Applied Physics, Nanjing University of Science and Technology, Nanjing, Jiangsu210094, China
| | - Kan Wang
- Department of Applied Physics, Nanjing University of Science and Technology, Nanjing, Jiangsu210094, China
| | - Xiangyu Tang
- Department of Applied Physics, Nanjing University of Science and Technology, Nanjing, Jiangsu210094, China
| | - Baochang Li
- Department of Applied Physics, Nanjing University of Science and Technology, Nanjing, Jiangsu210094, China
| | - Zhiming Yin
- Department of Applied Physics, Nanjing University of Science and Technology, Nanjing, Jiangsu210094, China
| | - Jiaxin Han
- Department of Applied Physics, Nanjing University of Science and Technology, Nanjing, Jiangsu210094, China
| | - C. D. Lin
- Department of Physics, James R. Macdonald Laboratory, Kansas State University, Manhattan, KS66506
| | - Cheng Jin
- Department of Applied Physics, Nanjing University of Science and Technology, Nanjing, Jiangsu210094, China
- Ministry of Industry and Information Technology Key Laboratory of Semiconductor Microstructure and Quantum Sensing, Nanjing University of Science and Technology, Nanjing, Jiangsu210094, China
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7
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de las Heras A, Bonafé FP, Hernández-García C, Rubio A, Neufeld O. Tunable Tesla-Scale Magnetic Attosecond Pulses through Ring-Current Gating. J Phys Chem Lett 2023; 14:11160-11167. [PMID: 38054653 PMCID: PMC10726360 DOI: 10.1021/acs.jpclett.3c02899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/28/2023] [Accepted: 11/30/2023] [Indexed: 12/07/2023]
Abstract
Coherent control over electron dynamics in atoms and molecules using high-intensity circularly polarized laser pulses gives rise to current loops, resulting in the emission of magnetic fields. We propose, and demonstrate with ab initio calculations, "current-gating" schemes to generate direct or alternating-current magnetic pulses in the infrared spectral region, with highly tunable waveform and frequency, and showing femtosecond-to-attosecond pulse duration. In optimal conditions, the magnetic pulse can be highly isolated from the driving laser and exhibits a high flux density (∼1 T at a few hundred nanometers from the source, with a pulse duration of 787 attoseconds) for application in forefront experiments of ultrafast spectroscopy. Our work paves the way toward the generation of attosecond magnetic fields to probe ultrafast magnetization, chiral responses, and spin dynamics.
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Affiliation(s)
- Alba de las Heras
- Grupo
de Investigación en Aplicaciones del Láser y Fotónica,
Departamento de Física Aplicada, Universidad de Salamanca, Salamanca 37008, Spain
| | - Franco P. Bonafé
- Max
Planck Institute for the Structure and Dynamics of Matter and Center
for Free-Electron Laser Science, Hamburg 22761, Germany
| | - Carlos Hernández-García
- Grupo
de Investigación en Aplicaciones del Láser y Fotónica,
Departamento de Física Aplicada, Universidad de Salamanca, Salamanca 37008, Spain
| | - Angel Rubio
- Max
Planck Institute for the Structure and Dynamics of Matter and Center
for Free-Electron Laser Science, Hamburg 22761, Germany
- Center
for Computational Quantum Physics, The Flatiron
Institute, New York 10010, United States
- Nano-Bio
Spectroscopy Group, Departamento de Física de Materiales, Universidad del País Vasco, San Sebastían 20018, Spain
| | - Ofer Neufeld
- Max
Planck Institute for the Structure and Dynamics of Matter and Center
for Free-Electron Laser Science, Hamburg 22761, Germany
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8
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Sparling C, Ruget A, Ireland L, Kotsina N, Ghafur O, Leach J, Townsend D. The importance of molecular axis alignment and symmetry-breaking in photoelectron elliptical dichroism. J Chem Phys 2023; 159:214301. [PMID: 38038198 DOI: 10.1063/5.0180361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 11/06/2023] [Indexed: 12/02/2023] Open
Abstract
Photoelectron angular distributions (PADs) produced from the photoionization of chiral molecules using elliptically polarized light exhibit a forward/backward asymmetry with respect to the optical propagation direction. By recording these distributions using the velocity-map imaging (VMI) technique, the resulting photoelectron elliptical dichroism (PEELD) has previously been demonstrated as a promising spectroscopic tool for studying chiral molecules in the gas phase. The use of elliptically polarized laser pulses, however, produces PADs (and consequently, PEELD distributions) that do not exhibit cylindrical symmetry about the propagation axis. This leads to significant limitations and challenges when employing conventional VMI acquisition and data processing strategies. Using novel photoelectron image analysis methods based around Hankel transform reconstruction tomography and machine learning, however, we have quantified-for the first time-significant symmetry-breaking contributions to PEELD signals that are of a comparable magnitude to the symmetric terms in the multiphoton ionization of (1R,4R)-(+)- and (1S,4S)-(-)-camphor. This contradicts any assumptions that symmetry-breaking can be ignored when reconstructing VMI data. Furthermore, these same symmetry-breaking terms are expected to appear in any experiment where circular and linear laser fields are used together. This ionization scheme is particularly relevant for investigating dynamics in chiral molecules, but it is not limited to them. Developing a full understanding of these terms and the role they play in the photoionization of chiral molecules is of clear importance if the potential of PEELD and related effects for future practical applications is to be fully realized.
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Affiliation(s)
- Chris Sparling
- Institute of Photonics & Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - Alice Ruget
- Institute of Photonics & Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - Lewis Ireland
- Institute of Photonics & Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - Nikoleta Kotsina
- Institute of Photonics & Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - Omair Ghafur
- Institute of Photonics & Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - Jonathan Leach
- Institute of Photonics & Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - Dave Townsend
- Institute of Photonics & Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
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9
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Tong J, Pan S, Jiang W, Han L, Xu Y, Zuo Z, Lu P, Gong X, Wu J. Identifying photoelectron releasing order in strong-field dissociative ionization of H 2. OPTICS EXPRESS 2023; 31:25467-25476. [PMID: 37710432 DOI: 10.1364/oe.495066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 07/04/2023] [Indexed: 09/16/2023]
Abstract
Driven by intense laser fields, the outgoing photoelectrons in molecules possess a quiver motion, resulting in the rise of the effective ionization potential. The coupling of the field-dressed ionization potential with abundant molecular dynamics complicates the laser-molecule interactions. Here, we demonstrate an approach to resolve photoelectron releasing order in the dissociative and non-dissociative channels of multiphoton ionization driven by an orthogonally polarized two-color femtosecond laser pulse. The photoelectron kinetic energy releases and the regular nodes in the photoelectron angular distributions due to the participation of different continuum partial waves allow us to deduce the field-dressed ionization potential of various channels. It returns the ponderomotive energy experienced by the outgoing electron and reveals the corresponding photoionization instants within the laser pulse. Our results provide a route to explore the complex strong-field ionization dynamics of molecules using two-dimensional photoelectron momentum spectroscopy.
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10
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Perosa G, Wätzel J, Garzella D, Allaria E, Bonanomi M, Danailov MB, Brynes A, Callegari C, De Ninno G, Demidovich A, Di Fraia M, Di Mitri S, Giannessi L, Manfredda M, Novinec L, Pal N, Penco G, Plekan O, Prince KC, Simoncig A, Spampinati S, Spezzani C, Zangrando M, Berakdar J, Feifel R, Squibb RJ, Coffee R, Hemsing E, Roussel E, Sansone G, McNeil BWJ, Ribič PR. Femtosecond Polarization Shaping of Free-Electron Laser Pulses. PHYSICAL REVIEW LETTERS 2023; 131:045001. [PMID: 37566861 DOI: 10.1103/physrevlett.131.045001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 06/13/2023] [Indexed: 08/13/2023]
Abstract
We demonstrate the generation of extreme-ultraviolet (XUV) free-electron laser (FEL) pulses with time-dependent polarization. To achieve polarization modulation on a femtosecond timescale, we combine two mutually delayed counterrotating circularly polarized subpulses from two cross-polarized undulators. The polarization profile of the pulses is probed by angle-resolved photoemission and above-threshold ionization of helium; the results agree with solutions of the time-dependent Schrödinger equation. The stability limit of the scheme is mainly set by electron-beam energy fluctuations, however, at a level that will not compromise experiments in the XUV. Our results demonstrate the potential to improve the resolution and element selectivity of methods based on polarization shaping and may lead to the development of new coherent control schemes for probing and manipulating core electrons in matter.
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Affiliation(s)
- Giovanni Perosa
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
- Department of Physics, Università degli Studi di Trieste, 34127 Trieste, Italy
| | - Jonas Wätzel
- Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06099 Halle (Saale), Germany
| | - David Garzella
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Enrico Allaria
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Matteo Bonanomi
- Politecnico di Milano, 20133 Milano, Italy
- Istituto di Fotonica e Nanotecnologie, 20133 Milano, Italy
| | | | | | - Carlo Callegari
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Giovanni De Ninno
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
- Laboratory of Quantum Optics, University of Nova Gorica, 5001 Nova Gorica, Slovenia
| | | | - Michele Di Fraia
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
- Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche, 34149 Basovizza, Italy
| | - Simone Di Mitri
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
- Department of Physics, Università degli Studi di Trieste, 34127 Trieste, Italy
| | - Luca Giannessi
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
- ENEA C.R. Frascati, 00044 Frascati (Roma), Italy
| | | | - Luka Novinec
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Nitish Pal
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Giuseppe Penco
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Oksana Plekan
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Kevin C Prince
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | | | | | - Carlo Spezzani
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
| | - Marco Zangrando
- Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy
- Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche, 34149 Basovizza, Italy
| | - Jamal Berakdar
- Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06099 Halle (Saale), Germany
| | - Raimund Feifel
- Department of Physics, University of Gothenburg, 41133 Gothenburg, Sweden
| | - Richard J Squibb
- Department of Physics, University of Gothenburg, 41133 Gothenburg, Sweden
| | - Ryan Coffee
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Erik Hemsing
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Eléonore Roussel
- Université de Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, F-59000 Lille, France
| | - Giuseppe Sansone
- Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, 79104 Freiburg, Germany
| | - Brian W J McNeil
- University of Strathclyde (SUPA), Glasgow G4 0NG, United Kingdom
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
- ASTeC, STFC Daresbury Laboratory, Warrington WA4 4AD, United Kingdom
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11
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Hanus V, Kangaparambil S, Richter M, Haßfurth L, Dorner-Kirchner M, Paulus GG, Xie X, Baltuška A, Gräfe S, Zeiler M. Carrier envelope phase sensitivity of photoelectron circular dichroism. Phys Chem Chem Phys 2023; 25:4656-4666. [PMID: 36722912 PMCID: PMC9906976 DOI: 10.1039/d2cp03077b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We report on a combined experimental and numerical study of photoelectron circular dichroism (PECD) induced by intense few-cycle laser pulses, using methyloxirane as the molecular example. Our experiments reveal a remarkably pronounced sensitivity of the PECD strength of double-ionization on the carrier-envelope phase (CEP) of the laser pulses. By comparison to the simulations, which reproduce the measured CEP-dependence for specific orientations of the molecules in the lab frame, we attribute the origin of the observed CEP-dependence of PECD to the CEP-induced modulation of ionization from different areas of the wave functions of three dominant orbitals.
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Affiliation(s)
- Václav Hanus
- Photonics Institute, Technische Universität Wien, 1040 Vienna, Austria. .,Wigner Research Centre for Physics, Institute for Solid State Physics and Optics, 1121 Budapest, Hungary
| | | | - Martin Richter
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany. .,Fraunhofer Institute for Applied Optics and Precision Engineering, 07745 Jena, Germany
| | - Lukas Haßfurth
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany. .,Fraunhofer Institute for Applied Optics and Precision Engineering, 07745 Jena, Germany
| | | | - Gerhard G. Paulus
- Institute for Optics and Quantum Electronics, Friedrich-Schiller-Universität Jena07743 JenaGermany
| | - Xinhua Xie
- Photonics Institute, Technische Universität Wien, 1040 Vienna, Austria. .,SwissFEL, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland
| | - Andrius Baltuška
- Photonics Institute, Technische Universität Wien, 1040 Vienna, Austria.
| | - Stefanie Gräfe
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany. .,Fraunhofer Institute for Applied Optics and Precision Engineering, 07745 Jena, Germany
| | - Markus Zeiler
- Photonics Institute, Technische Universität Wien, 1040 Vienna, Austria.
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12
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Mayer N, Patchkovskii S, Morales F, Ivanov M, Smirnova O. Imprinting Chirality on Atoms Using Synthetic Chiral Light Fields. PHYSICAL REVIEW LETTERS 2022; 129:243201. [PMID: 36563267 DOI: 10.1103/physrevlett.129.243201] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 05/14/2022] [Accepted: 10/21/2022] [Indexed: 06/17/2023]
Abstract
Atoms are usually thought of as achiral objects. However, one can construct superpositions of atomic states that are chiral [1]. Here, we show how to excite such superpositions with tailored light fields both in the weak-field and strong-field regimes, using realistic laser parameters. First, we use time-dependent Schrödinger equation simulations to demonstrate the creation of a time-dependent bound chiral wave packet in sodium atoms. Second, we show how the time-dependent handedness of this wave packet can be probed by photoelectron circular dichroism, in spite of the central symmetry of the core potential. Third, we use time-dependent Schrödinger equation simulations to show how chirality can be directly imprinted on a photoelectron wave packet created by strong-field ionization and introduce an unambiguous chiral measure that allows us to characterize its handedness.
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Affiliation(s)
- Nicola Mayer
- Max-Born-Institute, Max-Born Strasse 2A, 12489 Berlin, Germany
| | | | - Felipe Morales
- Max-Born-Institute, Max-Born Strasse 2A, 12489 Berlin, Germany
| | - Misha Ivanov
- Max-Born-Institute, Max-Born Strasse 2A, 12489 Berlin, Germany
- Department of Physics, Humboldt University, Newtonstrasse 15, D-12489 Berlin, Germany
- Blackett Laboratory, Imperial College London, SW7 2AZ London, United Kingdom
| | - Olga Smirnova
- Max-Born-Institute, Max-Born Strasse 2A, 12489 Berlin, Germany
- Department of Physics, Technical University Berlin, 10623 Berlin, Germany
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13
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Tikhonov DS, Blech A, Leibscher M, Greenman L, Schnell M, Koch CP. Pump-probe spectroscopy of chiral vibrational dynamics. SCIENCE ADVANCES 2022; 8:eade0311. [PMID: 36475788 PMCID: PMC9728962 DOI: 10.1126/sciadv.ade0311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 10/25/2022] [Indexed: 06/17/2023]
Abstract
A planar molecule may become chiral upon excitation of an out-of-plane vibration, changing its handedness during half a vibrational period. When exciting such a vibration in an ensemble of randomly oriented molecules with an infrared laser, half of the molecules will undergo the vibration phase-shifted by π compared to the other half, and no net chiral signal is observed. This symmetry can be broken by exciting the vibrational motion with a Raman transition in the presence of a static electric field. Subsequent ionization of the vibrating molecules by an extreme ultraviolet pulse probes the time-dependent net handedness via the photoelectron circular dichroism. Our proposal for pump-probe spectroscopy of molecular chirality, based on quantum-chemical theory and discussed for the example of the carbonyl chlorofluoride molecule, is feasible with current experimental technology.
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Affiliation(s)
- Denis S. Tikhonov
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
- Institute of Physical Chemistry, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 1, 24118 Kiel, Germany
| | - Alexander Blech
- Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Monika Leibscher
- Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Loren Greenman
- Department of Physics, Kansas State University, 116 Cardwell Hall, 1228 N. 17th St., Manhattan, KS 66506-2601, USA
| | - Melanie Schnell
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
- Institute of Physical Chemistry, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 1, 24118 Kiel, Germany
| | - Christiane P. Koch
- Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
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14
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Planas XB, Ordóñez A, Lewenstein M, Maxwell AS. Ultrafast Imaging of Molecular Chirality with Photoelectron Vortices. PHYSICAL REVIEW LETTERS 2022; 129:233201. [PMID: 36563195 DOI: 10.1103/physrevlett.129.233201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 07/30/2022] [Accepted: 10/25/2022] [Indexed: 06/17/2023]
Abstract
Ultrafast imaging of molecular chirality is a key step toward the dream of imaging and interpreting electronic dynamics in complex and biologically relevant molecules. Here, we propose a new ultrafast chiral phenomenon exploiting recent advances in electron optics allowing access to the orbital angular momentum of free electrons. We show that strong-field ionization of a chiral target with a few-cycle linearly polarized 800 nm laser pulse yields photoelectron vortices, whose chirality reveals that of the target, and we discuss the mechanism underlying this phenomenon. Our Letter opens new perspectives in recollision-based chiral imaging.
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Affiliation(s)
- Xavier Barcons Planas
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain
| | - Andrés Ordóñez
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain
| | - Maciej Lewenstein
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain
- ICREA, Passeig de Lluís Companys 23, 08010 Barcelona, Spain
| | - Andrew S Maxwell
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain
- Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
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15
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Jiang W, Armstrong GSJ, Tong J, Xu Y, Zuo Z, Qiang J, Lu P, Clarke DDA, Benda J, Fleischer A, Ni H, Ueda K, van der Hart HW, Brown AC, Gong X, Wu J. Atomic partial wave meter by attosecond coincidence metrology. Nat Commun 2022; 13:5072. [PMID: 36038537 PMCID: PMC9424306 DOI: 10.1038/s41467-022-32753-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 08/15/2022] [Indexed: 11/29/2022] Open
Abstract
Attosecond chronoscopy is central to the understanding of ultrafast electron dynamics in matter from gas to the condensed phase with attosecond temporal resolution. It has, however, not yet been possible to determine the timing of individual partial waves, and steering their contribution has been a substantial challenge. Here, we develop a polarization-skewed attosecond chronoscopy serving as a partial wave meter to reveal the role of each partial wave from the angle-resolved photoionization phase shifts in rare gas atoms. We steer the relative ratio between different partial waves and realize a magnetic-sublevel-resolved atomic phase shift measurement. Our experimental observations are well supported by time-dependent R-matrix numerical simulations and analytical soft-photon approximation analysis. The symmetry-resolved, partial-wave analysis identifies the transition rate and phase shift property in the attosecond photoelectron emission dynamics. Our findings provide critical insights into the ubiquitous attosecond optical timer and the underlying attosecond photoionization dynamics. Understanding the photoelectron emission time after the interaction of photon with atoms and molecules is of fundamental interest. Here the authors examine the role of partial waves to the photoionization phase shift of atoms using an attosecond clock and electron-ion coincidence spectroscopy.
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Affiliation(s)
- Wenyu Jiang
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, China
| | - Gregory S J Armstrong
- Centre for Theoretical Atomic, Molecular and Optical Physics, School of Mathematics and Physics, Queen's University Belfast, University Road, Belfast, BT7 1NN, Northern Ireland, UK
| | - Jihong Tong
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, China
| | - Yidan Xu
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, China
| | - Zitan Zuo
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, China
| | - Junjie Qiang
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, China
| | - Peifen Lu
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, China
| | - Daniel D A Clarke
- School of Physics and CRANN Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Jakub Benda
- Institute of Theoretical Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00, Prague 8, Czech Republic
| | - Avner Fleischer
- Raymond and Beverly Sackler Faculty of Exact Science, School of Chemistry and Center for Light-Matter Interaction, Tel Aviv University, 6997801, Tel-Aviv, Israel
| | - Hongcheng Ni
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, China.,Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi, China
| | - Kiyoshi Ueda
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, China
| | - Hugo W van der Hart
- Centre for Theoretical Atomic, Molecular and Optical Physics, School of Mathematics and Physics, Queen's University Belfast, University Road, Belfast, BT7 1NN, Northern Ireland, UK
| | - Andrew C Brown
- Centre for Theoretical Atomic, Molecular and Optical Physics, School of Mathematics and Physics, Queen's University Belfast, University Road, Belfast, BT7 1NN, Northern Ireland, UK.
| | - Xiaochun Gong
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, China. .,Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi, China.
| | - Jian Wu
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, China. .,Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi, China. .,CAS Center for Excellence in Ultra-intense Laser Science, Shanghai, China.
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16
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Xu L, Tutunnikov I, Prior Y, Averbukh I. Optimization of the double-laser-pulse scheme for enantioselective orientation of chiral molecules. J Chem Phys 2022; 157:034304. [DOI: 10.1063/5.0092114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present a comprehensive study of enantioselective orientation of chiral molecules excited by a pair of delayed cross-polarized femtosecond laser pulses. We show that by optimizing the pulses' parameters, a significant (~ 10%) degree of enantioselective orientation can be achieved at zero and at five kelvin rotational temperatures. This study suggests a set of reasonable experimental conditions for inducing and measuring strong enantioselective orientation. The strong enantioselective orientation and the wide availability of the femtosecond laser systems required for the proposed experiments may open new avenues for discriminating and separating molecular enantiomers.
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Affiliation(s)
- Long Xu
- Department of Chemical and Biological Physics, Weizmann Institute of Science, Israel
| | - Ilia Tutunnikov
- Department of Chemical and Biological Physics, Weizmann Institute of Science, Israel
| | | | - Ilya Averbukh
- Department of Chemical and Biological Physics, Weizmann Institute of Science, Israel
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17
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Signorell R, Winter B. Photoionization of the aqueous phase: clusters, droplets and liquid jets. Phys Chem Chem Phys 2022; 24:13438-13460. [PMID: 35510623 PMCID: PMC9176186 DOI: 10.1039/d2cp00164k] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
This perspective article reviews specific challenges associated with photoemission spectroscopy of bulk liquid water, aqueous solutions, water droplets and water clusters. The main focus lies on retrieving accurate energetics and photoelectron angular information from measured photoemission spectra, and on the question how these quantities differ in different aqueous environments. Measured photoelectron band shapes, vertical binding energies (ionization energies), and photoelectron angular distributions are influenced by various phenomena. We discuss the influences of multiple energy-dependent electron scattering in aqueous environments, and we discuss different energy referencing methods, including the application of a bias voltage to access absolute energetics of solvent and solute. Recommendations how to account for or minimize the influence of electron scattering are provided. The example of the hydrated electron in different aqueous environments illustrates how one can account for electron scattering, while reliable methods addressing parasitic potentials and proper energy referencing are demonstrated for ionization from the outermost valence orbital of neat liquid water. This perspective article reviews specific challenges associated with photoemission spectroscopy of bulk liquid water, aqueous solutions, water droplets and water clusters.![]()
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Affiliation(s)
- Ruth Signorell
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland.
| | - Bernd Winter
- Molecular Physics Department, Fritz-Haber-Institute der Max-Planck-Gesellschaft, Faradayweg 4-6, 14196 Berlin, Germany.
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18
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Ordonez AF, Smirnova O. A geometric approach to decoding molecular structure and dynamics from photoionization of isotropic samples. Phys Chem Chem Phys 2022; 24:13605-13615. [PMID: 35621456 DOI: 10.1039/d1cp05645j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We propose a geometric approach to the description and analysis of photoelectron angular distributions resulting from isotropic samples in the case of few-photon ionization by electric fields of arbitrary polarization. This approach formulates the standard photoionization observables - the bl,m expansion coefficients of the photoelectron angular distribution, in terms of geometrical properties of the vector field D⃑(k⃑) ≡ 〈k⃑|d⃑|0〉 describing the electronic transition from a bound state |0〉 into a scattering state |k⃑〉 - the photoionization transition dipole. Besides revealing selection rules for the enantio-sensitivity of bl,m coefficients in multiphoton ionization, our approach yields very compact expressions for both chiral and achiral molecules revealing how the molecular rotational invariants couple to the rotational invariants of the setup defined by the electric field polarization and the arrangement of photoelectron detectors. We apply this approach to one-photon ionization and find that the forward-backward asymmetry parameter b1,0, emerging exclusively in chiral molecules and encoded in the field B⃑(k⃑) ≡ iD⃑*(k⃑) × D⃑(k⃑), is sensitive only to the components of D⃑(k⃑) perpendicular to k⃑, while the regular asymmetry parameter b2,0 emerging in chiral and achiral molecules is sensitive only to the component of D⃑(k⃑) parallel to k⃑. Next, we analyze resonantly enhanced two-photon ionization and show that b0,0 and b1,0 can be written in terms of an effectively stretched D⃑(k⃑), and how b1,0 and b3,0 can be used to probe B⃑(k⃑).
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Affiliation(s)
- Andres F Ordonez
- Max-Born-Institut, 12489 Berlin, Germany. .,ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain.
| | - Olga Smirnova
- Max-Born-Institut, 12489 Berlin, Germany. .,Technische Universität Berlin, 10623, Berlin, Germany
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19
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Borrego-Varillas R, Lucchini M, Nisoli M. Attosecond spectroscopy for the investigation of ultrafast dynamics in atomic, molecular and solid-state physics. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2022; 85:066401. [PMID: 35294930 DOI: 10.1088/1361-6633/ac5e7f] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 03/16/2022] [Indexed: 06/14/2023]
Abstract
Since the first demonstration of the generation of attosecond pulses (1 as = 10-18s) in the extreme-ultraviolet spectral region, several measurement techniques have been introduced, at the beginning for the temporal characterization of the pulses, and immediately after for the investigation of electronic and nuclear ultrafast dynamics in atoms, molecules and solids with unprecedented temporal resolution. The attosecond spectroscopic tools established in the last two decades, together with the development of sophisticated theoretical methods for the interpretation of the experimental outcomes, allowed to unravel and investigate physical processes never observed before, such as the delay in photoemission from atoms and solids, the motion of electrons in molecules after prompt ionization which precede any notable nuclear motion, the temporal evolution of the tunneling process in dielectrics, and many others. This review focused on applications of attosecond techniques to the investigation of ultrafast processes in atoms, molecules and solids. Thanks to the introduction and ongoing developments of new spectroscopic techniques, the attosecond science is rapidly moving towards the investigation, understanding and control of coupled electron-nuclear dynamics in increasingly complex systems, with ever more accurate and complete investigation techniques. Here we will review the most common techniques presenting the latest results in atoms, molecules and solids.
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Affiliation(s)
- Rocío Borrego-Varillas
- Institute for Photonics and Nanotechnologies (IFN), Consiglio Nazionale delle Ricerche (CNR), Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Matteo Lucchini
- Institute for Photonics and Nanotechnologies (IFN), Consiglio Nazionale delle Ricerche (CNR), Piazza Leonardo da Vinci 32, 20133 Milano, Italy
- Department of Physics, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Mauro Nisoli
- Institute for Photonics and Nanotechnologies (IFN), Consiglio Nazionale delle Ricerche (CNR), Piazza Leonardo da Vinci 32, 20133 Milano, Italy
- Department of Physics, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
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20
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Ayuso D. New opportunities for ultrafast and highly enantio-sensitive imaging of chiral nuclear dynamics enabled by synthetic chiral light. Phys Chem Chem Phys 2022; 24:10193-10200. [PMID: 35420074 DOI: 10.1039/d1cp05427a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Synthetic chiral light [D. Ayuso et al., Nat. Photon., 2019, 13, 866-871] has opened up new opportunities for ultrafast and highly efficient imaging and control of chiral matter. Here we show that the giant enantio-sensitivity enabled by such light could be exploited to probe chiral nuclear rearrangements during chemical reactions in a highly enantio-sensitive manner. Using a state-of-the-art implementation of real-time time-dependent density functional theory, we explore how the nonlinear response of the prototypical chiral molecule H2O2 changes as a function of its dihedral angle, which defines its handedness. The macroscopic intensity emitted from randomly oriented molecules at even harmonic frequencies (of the fundamental) depends strongly on this nuclear coordinate. Because of the ultrafast nature of such nonlinear interactions, the direct mapping between the dissymmetry factor and the nuclear geometry provides a way to probe chiral nuclear dynamics at their natural time scales. Our work paves the way for ultrafast and highly efficient imaging of enantio-sensitive dynamics in more complex chiral systems, including biologically relevant molecules.
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Affiliation(s)
- David Ayuso
- Department of Physics, Imperial College London, SW7 2AZ London, UK. .,Max-Born-Institut, Max-Born-Str. 2A, 12489 Berlin, Germany
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21
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Pohl MN, Malerz S, Trinter F, Lee C, Kolbeck C, Wilkinson I, Thürmer S, Neumark DM, Nahon L, Powis I, Meijer G, Winter B, Hergenhahn U. Photoelectron circular dichroism in angle-resolved photoemission from liquid fenchone. Phys Chem Chem Phys 2022; 24:8081-8092. [PMID: 35253025 PMCID: PMC8985659 DOI: 10.1039/d1cp05748k] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present an experimental X-ray photoelectron circular dichroism (PECD) study of liquid fenchone at the C 1s edge. A novel setup to enable PECD measurements on a liquid microjet [Malerz et al., Rev. Sci. Instrum., 2022, 93, 015101] was used. For the C 1s line assigned to fenchone's carbonyl carbon, a non-vanishing asymmetry is found in the intensity of photoelectron spectra acquired under a fixed angle in the backward-scattering plane. This experiment paves the way towards an innovative probe of the chirality of organic/biological molecules in aqueous solution. We present the first X-ray photoelectron circular dichroism (PECD) study from a liquid phase sample, exemplified for liquid fenchone at the C 1s edge.![]()
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Affiliation(s)
- Marvin N Pohl
- Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany. .,Department of Chemistry, University of California, Berkeley, CA 94720, USA.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Sebastian Malerz
- Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.
| | - Florian Trinter
- Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany. .,Institut für Kernphysik, Goethe-Universität Franfurt am Main, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
| | - Chin Lee
- Department of Chemistry, University of California, Berkeley, CA 94720, USA.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Claudia Kolbeck
- Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.
| | - Iain Wilkinson
- Department of Locally-Sensitive & Time-Resolved Spectroscopy, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Stephan Thürmer
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-Ku, Kyoto 606-8502, Japan
| | - Daniel M Neumark
- Department of Chemistry, University of California, Berkeley, CA 94720, USA.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Laurent Nahon
- Synchrotron SOLEIL, L'Orme des Mersiers, St. Aubin, BP 48, 91192 Gif sur Yvette, France
| | - Ivan Powis
- School of Chemistry, The University of Nottingham, University Park, Nottingham, UK
| | - Gerard Meijer
- Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.
| | - Bernd Winter
- Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.
| | - Uwe Hergenhahn
- Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.
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22
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Autuori A, Platzer D, Lejman M, Gallician G, Maëder L, Covolo A, Bosse L, Dalui M, Bresteau D, Hergott JF, Tcherbakoff O, Marroux HJB, Loriot V, Lépine F, Poisson L, Taïeb R, Caillat J, Salières P. Anisotropic dynamics of two-photon ionization: An attosecond movie of photoemission. SCIENCE ADVANCES 2022; 8:eabl7594. [PMID: 35319974 PMCID: PMC8942362 DOI: 10.1126/sciadv.abl7594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 01/31/2022] [Indexed: 06/14/2023]
Abstract
Imaging in real time the complete dynamics of a process as fundamental as photoemission has long been out of reach because of the difficulty of combining attosecond temporal resolution with fine spectral and angular resolutions. Here, we achieve full decoding of the intricate angle-dependent dynamics of a photoemission process in helium, spectrally and anisotropically structured by two-photon transitions through intermediate bound states. Using spectrally and angularly resolved attosecond electron interferometry, we characterize the complex-valued transition probability amplitude toward the photoelectron quantum state. This allows reconstructing in space, time, and energy the complete formation of the photoionized wave packet.
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Affiliation(s)
- Alice Autuori
- Université Paris-Saclay, CEA, CNRS, LIDYL,91191 Gif-sur-Yvette, France
| | - Dominique Platzer
- Université Paris-Saclay, CEA, CNRS, LIDYL,91191 Gif-sur-Yvette, France
| | - Mariusz Lejman
- Université Paris-Saclay, CEA, CNRS, LIDYL,91191 Gif-sur-Yvette, France
| | | | - Lucie Maëder
- Université Paris-Saclay, CEA, CNRS, LIDYL,91191 Gif-sur-Yvette, France
| | - Antoine Covolo
- Université Paris-Saclay, CEA, CNRS, LIDYL,91191 Gif-sur-Yvette, France
| | - Lea Bosse
- Université Paris-Saclay, CEA, CNRS, LIDYL,91191 Gif-sur-Yvette, France
| | - Malay Dalui
- Université Paris-Saclay, CEA, CNRS, LIDYL,91191 Gif-sur-Yvette, France
| | - David Bresteau
- Université Paris-Saclay, CEA, CNRS, LIDYL,91191 Gif-sur-Yvette, France
| | | | | | | | - Vincent Loriot
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, 69622 Villeurbanne, France
| | - Franck Lépine
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, 69622 Villeurbanne, France
| | - Lionel Poisson
- Université Paris-Saclay, CEA, CNRS, LIDYL,91191 Gif-sur-Yvette, France
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d’Orsay,91405 Orsay, France
| | - Richard Taïeb
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005 Paris, France
| | - Jérémie Caillat
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005 Paris, France
| | - Pascal Salières
- Université Paris-Saclay, CEA, CNRS, LIDYL,91191 Gif-sur-Yvette, France
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23
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Krebs BS, Tulsky V, Kazak L, Zabel M, Bauer D, Tiggesbäumker J. Phase-of-the-Phase Electron Momentum Spectroscopy on Single Metal Atoms in Helium Nanodroplets. J Phys Chem Lett 2022; 13:1526-1532. [PMID: 35133167 DOI: 10.1021/acs.jpclett.2c00110] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Magnesium atoms fully embedded in helium nanodroplets are exposed to two-color laser pulses, which trigger multiphoton above-threshold ionization (ATI). This allows exemplary study of the contribution of a dense, neutral, and finite medium on single electron propagation. The angular-resolved photoelectron spectra show striking differences with respect to results obtained on free atoms. Scattering of the individual Mg photoelectrons, when traversing the neutral helium environment, causes the angular distribution to become almost isotropic. Furthermore, the appearance of higher-energy electrons is observed, indicating the impact of the droplet on the concerted emission process. Phase-of-the-phase spectroscopy, however, reveals a marked loss in the 2ω-ω phase dependence of the electron signal. Taking into account sideband formation on a quantitative level, a Monte Carlo simulation which includes laser-assisted electron scattering can reproduce the experimental spectra and give insights into the strong-field-induced electron emission from disordered systems.
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Affiliation(s)
- Bennet S Krebs
- Institute of Physics, University of Rostock, 18059 Rostock, Germany
- Department "Life, Light and Matter", University of Rostock, 18059 Rostock, Germany
| | - Vasily Tulsky
- Institute of Physics, University of Rostock, 18059 Rostock, Germany
| | - Lev Kazak
- Institute of Physics, University of Rostock, 18059 Rostock, Germany
| | - Michael Zabel
- Institute of Physics, University of Rostock, 18059 Rostock, Germany
- Department "Life, Light and Matter", University of Rostock, 18059 Rostock, Germany
| | - Dieter Bauer
- Institute of Physics, University of Rostock, 18059 Rostock, Germany
| | - Josef Tiggesbäumker
- Institute of Physics, University of Rostock, 18059 Rostock, Germany
- Department "Life, Light and Matter", University of Rostock, 18059 Rostock, Germany
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24
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Artemyev AN, Kutscher E, Demekhin PV. Photoelectron circular dichroism of a model chiral anion. J Chem Phys 2022; 156:031101. [DOI: 10.1063/5.0079723] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Anton N. Artemyev
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
| | - Eric Kutscher
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
| | - Philipp V. Demekhin
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
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25
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Janssen M, Nahon L, Smirnova O, Stolow A. Fundamentals and applications of molecular photoelectron spectroscopy – Festschrift for Ivan Powis. Phys Chem Chem Phys 2022; 24:24611-24613. [DOI: 10.1039/d2cp90168d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
This themed collection includes a collection of articles on fundamentals and applications of molecular photoelectron spectroscopy.
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Affiliation(s)
| | | | - Olga Smirnova
- Max Born Institute and Technical University Berlin, Germany
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26
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Singh DP, Thompson JOF, Reid KL, Powis I. Influence of Vibrational Excitation and Nuclear Dynamics in Multiphoton Photoelectron Circular Dichroism of Fenchone. J Phys Chem Lett 2021; 12:11438-11443. [PMID: 34792356 DOI: 10.1021/acs.jpclett.1c03231] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We report photoelectron circular dichroism of S-(+)-fenchone enantiomers recorded with state-state vibrational level resolution using picosecond laser (2 + 1) resonance enhanced multiphoton ionization via 3s and 3p Rydberg intermediate states. The 3p state decays to the 3s state on a picosecond time scale so that, above the 3p Rydberg excitation threshold, ionization of vibrationally hot 3s states competes with direct 3p-1 ionization. Complex vibronic dynamics of the 3p → 3s internal conversion weaken the Rydberg Δv = 0 propensity rule in both the 3p-1 and 3s-1 ionization channels. Large variations of the forward-backward chiral asymmetry factors are observed between the Δv = 0 and Δv > 0 vibrational transitions, including dramatic swings from up to ±17%. Such changes of sign indicate complete reversal of the preferred direction for photoelectron emission in the laboratory frame, associated with vibrational motion. These asymmetry switches easily exceed the amplitude and frequency of such vibrationally induced flips previously observed in single photon ionization.
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Affiliation(s)
- Dhirendra P Singh
- School of Chemistry, The University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - James O F Thompson
- School of Chemistry, The University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Katharine L Reid
- School of Chemistry, The University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Ivan Powis
- School of Chemistry, The University of Nottingham, University Park, Nottingham NG7 2RD, U.K
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27
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Blanchet V, Descamps D, Petit S, Mairesse Y, Pons B, Fabre B. Ultrafast relaxation investigated by photoelectron circular dichroism: an isomeric comparison of camphor and fenchone. Phys Chem Chem Phys 2021; 23:25612-25628. [PMID: 34781331 DOI: 10.1039/d1cp03569j] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We study the isomeric effects using time resolved photoelectron circular dichroism (TR-PECD). Using a (1 + 1') pump-probe ionisation scheme with photoelectrons collected by the velocity map imaging technique, we compare the relaxation dynamics from the 3s-Rydberg state in 1R,4R-(+)-camphor with the one in its chiral isomer, 1R,4S-(-)-fenchone [Comby et al., 2016, JPCL, 7, 4514]. Our measurements revealed a similar lifetime for both isomers. However, the circular dichroism in the photoelectron angular distribution decays exponentially in ∼730 fs from a +9% forward amplitude during the first hundreds of femtoseconds to reach an asymptotic -2% backward amplitude. This time-scale is drastically shorter than in fenchone. Our analysis allows us to evaluate the impact of the anisotropy of excitation; the relaxation dynamics, following photoexcitation by the linearly polarized pump, is then compared to that induced by a circularly polarized pump pulse (CPL). With such a CPL pump, we then retrieve time constants of our chiral observables similar to the ones recorded in fenchone. Quantum and classical simulations are developed and used to decipher the dependence of the PECD on the anisotropy of excitation and the spatial distribution of the 3s-Rydberg electron wavefunction. Our experimental investigations, supported by our simulations, suggest that varying the pump ellipticity enables us to reveal the breakdown of the Franck-Condon approximation.
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Affiliation(s)
- Valérie Blanchet
- Université de Bordeaux-CNRS-CEA, CELIA, UMR5107, F33405 Talence, France.
| | - Dominique Descamps
- Université de Bordeaux-CNRS-CEA, CELIA, UMR5107, F33405 Talence, France.
| | - Stéphane Petit
- Université de Bordeaux-CNRS-CEA, CELIA, UMR5107, F33405 Talence, France.
| | - Yann Mairesse
- Université de Bordeaux-CNRS-CEA, CELIA, UMR5107, F33405 Talence, France.
| | - Bernard Pons
- Université de Bordeaux-CNRS-CEA, CELIA, UMR5107, F33405 Talence, France.
| | - Baptiste Fabre
- Université de Bordeaux-CNRS-CEA, CELIA, UMR5107, F33405 Talence, France.
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28
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Rist J, Klyssek K, Novikovskiy NM, Kircher M, Vela-Pérez I, Trabert D, Grundmann S, Tsitsonis D, Siebert J, Geyer A, Melzer N, Schwarz C, Anders N, Kaiser L, Fehre K, Hartung A, Eckart S, Schmidt LPH, Schöffler MS, Davis VT, Williams JB, Trinter F, Dörner R, Demekhin PV, Jahnke T. Measuring the photoelectron emission delay in the molecular frame. Nat Commun 2021; 12:6657. [PMID: 34789736 PMCID: PMC8599449 DOI: 10.1038/s41467-021-26994-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 10/28/2021] [Indexed: 11/10/2022] Open
Abstract
How long does it take to emit an electron from an atom? This question has intrigued scientists for decades. As such emission times are in the attosecond regime, the advent of attosecond metrology using ultrashort and intense lasers has re-triggered strong interest on the topic from an experimental standpoint. Here, we present an approach to measure such emission delays, which does not require attosecond light pulses, and works without the presence of superimposed infrared laser fields. We instead extract the emission delay from the interference pattern generated as the emitted photoelectron is diffracted by the parent ion's potential. Targeting core electrons in CO, we measured a 2d map of photoelectron emission delays in the molecular frame over a wide range of electron energies. The emission times depend drastically on the photoelectrons' emission directions in the molecular frame and exhibit characteristic changes along the shape resonance of the molecule.
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Affiliation(s)
- Jonas Rist
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany.
| | - Kim Klyssek
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
| | - Nikolay M Novikovskiy
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, 34132, Kassel, Germany
- Institute of Physics, Southern Federal University, 344090, Rostov-on-Don, Russia
| | - Max Kircher
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
| | - Isabel Vela-Pérez
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
| | - Daniel Trabert
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
| | - Sven Grundmann
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
| | - Dimitrios Tsitsonis
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
| | - Juliane Siebert
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
| | - Angelina Geyer
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
| | - Niklas Melzer
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
| | - Christian Schwarz
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
| | - Nils Anders
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
| | - Leon Kaiser
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
| | - Kilian Fehre
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
| | - Alexander Hartung
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
| | - Sebastian Eckart
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
| | - Lothar Ph H Schmidt
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
| | - Markus S Schöffler
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
| | - Vernon T Davis
- Department of Physics, University of Nevada, Reno, NV, 89557, USA
| | | | - Florian Trinter
- FS-PETRA-S, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
- Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany
| | - Reinhard Dörner
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
| | - Philipp V Demekhin
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, 34132, Kassel, Germany.
| | - Till Jahnke
- Institut für Kernphysik, J. W. Goethe-Universität, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany.
- European XFEL, Holzkoppel 4, 22869, Schenefeld, Germany.
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29
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Ghomashi B, Douguet N, Argenti L. Attosecond Intramolecular Scattering and Vibronic Delays. PHYSICAL REVIEW LETTERS 2021; 127:203201. [PMID: 34860043 DOI: 10.1103/physrevlett.127.203201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 06/15/2021] [Accepted: 10/07/2021] [Indexed: 06/13/2023]
Abstract
We study the temporal and vibrational signature of the universal nuclear recoil associated with the electron emission and intramolecular scattering that accompanies the photoelectric effect. We illustrate these phenomena in the photoionization of the CO molecule from the C-1s orbital using an analytical model that reproduces the entangled character of the nuclear and electronic motion in this process. We show that the photoelectron emission delay can be decomposed into its localization and resonant-confinement components. Photoionization by a broadband x-ray pulse results in a coherent vibrational ionic state delayed compared to the classical sudden-photoemission limit.
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Affiliation(s)
- Bejan Ghomashi
- University of Colorado at Boulder, Boulder, Colorado 80309, USA
| | - Nicolas Douguet
- Department of Physics, Kennesaw State University, Marietta, Georgia 30060, USA
| | - Luca Argenti
- Department of Physics & CREOL, University of Central Florida, Orlando, Florida 32816, USA
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30
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Fehre K, Novikovskiy NM, Grundmann S, Kastirke G, Eckart S, Trinter F, Rist J, Hartung A, Trabert D, Janke C, Nalin G, Pitzer M, Zeller S, Wiegandt F, Weller M, Kircher M, Hofmann M, Schmidt LPH, Knie A, Hans A, Ltaief LB, Ehresmann A, Berger R, Fukuzawa H, Ueda K, Schmidt-Böcking H, Williams JB, Jahnke T, Dörner R, Schöffler MS, Demekhin PV. Fourfold Differential Photoelectron Circular Dichroism. PHYSICAL REVIEW LETTERS 2021; 127:103201. [PMID: 34533326 DOI: 10.1103/physrevlett.127.103201] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 08/08/2021] [Indexed: 06/13/2023]
Abstract
We report on a joint experimental and theoretical study of photoelectron circular dichroism (PECD) in methyloxirane. By detecting O 1s photoelectrons in coincidence with fragment ions, we deduce the molecule's orientation and photoelectron emission direction in the laboratory frame. Thereby, we retrieve a fourfold differential PECD clearly beyond 50%. This strong chiral asymmetry is reproduced by ab initio electronic structure calculations. Providing such a pronounced contrast makes PECD of fixed-in-space chiral molecules an even more sensitive tool for chiral recognition in the gas phase.
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Affiliation(s)
- K Fehre
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - N M Novikovskiy
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, Kassel 34132, Germany
- Institute of Physics, Southern Federal University, Rostov-on-Don 344090, Russia
| | - S Grundmann
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - G Kastirke
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - S Eckart
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - F Trinter
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
- Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, Berlin 14195, Germany
| | - J Rist
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - A Hartung
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - D Trabert
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - C Janke
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - G Nalin
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - M Pitzer
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - S Zeller
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - F Wiegandt
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - M Weller
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - M Kircher
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - M Hofmann
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - L Ph H Schmidt
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - A Knie
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, Kassel 34132, Germany
| | - A Hans
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, Kassel 34132, Germany
| | - L Ben Ltaief
- Department of Physics and Astronomy, Aarhus University, Århus 8000, Denmark
| | - A Ehresmann
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, Kassel 34132, Germany
| | - R Berger
- Theoretical Chemistry, Universität Marburg, Hans-Meerwein-Strasse 4, Marburg 35032, Germany
| | - H Fukuzawa
- Institute of multidisciplinary research for advanced materials, Tohoku University, Sendai 980-8577, Japan
| | - K Ueda
- Institute of multidisciplinary research for advanced materials, Tohoku University, Sendai 980-8577, Japan
| | - H Schmidt-Böcking
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - J B Williams
- Department of Physics, University of Nevada, Reno, Nevada 89557, USA
| | - T Jahnke
- European XFEL, Holzkoppel 4, Schenefeld 22869, Germany
| | - R Dörner
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - M S Schöffler
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, Frankfurt am Main 60438, Germany
| | - Ph V Demekhin
- Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, Kassel 34132, Germany
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31
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Chen J, Hu G, Cao G, Deng Y, Zhou LM, Wen Z, Yang H, Li G, Chen X. Manipulating mode degeneracy for tunable spectral characteristics in multi-microcavity photonic molecules. OPTICS EXPRESS 2021; 29:11181-11193. [PMID: 33820236 DOI: 10.1364/oe.420462] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 03/18/2021] [Indexed: 06/12/2023]
Abstract
Optical microcavities are capable of confining light to a small volume, which could dramatically enhance the light-matter interactions and hence improve the performances of photonic devices. However, in the previous works on the emergent properties with photonic molecules composed of multiple plasmonic microcavities, the underlying physical mechanism is unresolved, thereby imposing an inevitable restriction on manipulating degenerate modes in microcavity with outstanding performance. Here, we demonstrate the mode-mode interaction mechanism in photonic molecules composed of degenerate-mode cavity and single-mode cavity through utilizing the coupled mode theory. Numerical and analytical results further elucidate that the introduction of direct coupling between the degenerate-mode cavity and single-mode cavity can lift the mode degeneracy and give rise to the mode splitting, which contributes to single Fano resonance and dual EIT-like effects in the double-cavity photonic molecule structure. Four times the optical delay time compared to typical double-cavity photonic molecule are achieved after removing the mode degeneracy. Besides, with the preserved mode degeneracy, ultra-wide filtering bandwidth and high peak transmission is obtained in multiple-cavity photonic molecules. Our results provide a broad range of applications for ultra-compact and multifunction photonic devices in highly integrated optical circuits.
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32
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Ye L, Yang L, Zheng X, Mukamel S. Enhancing Circular Dichroism Signals with Vector Beams. PHYSICAL REVIEW LETTERS 2021; 126:123001. [PMID: 33834806 DOI: 10.1103/physrevlett.126.123001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 02/24/2021] [Indexed: 06/12/2023]
Abstract
Circular dichroism (CD) is broadly employed for distinguishing molecular chiralities. However, its practical application is often limited by the weak magnitude of chiral signal. We propose to use azimuthally and radially polarized vector beams to probe CD spectra. By taking advantage of the strong longitudinal components of the vector beams, the transmitted light can be detected in the radial direction. The resulting CD signal is several orders of magnitude stronger than conventional CD signal with plane waves. Quantitative analysis and numerical simulations show that the enhancement factor is independent of molecular properties and can be increased by decreasing the path length of the sample cuvette and the interaction cross section between the light beam and molecular sample. The proposed novel CD spectroscopy is feasible with the current optical technology.
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Affiliation(s)
- Lyuzhou Ye
- Hefei National Laboratory for Physical Sciences at the Microscale & Synergetic Innovation Center of Quantum Information and Quantum Physics and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Longqing Yang
- Hefei National Laboratory for Physical Sciences at the Microscale & Synergetic Innovation Center of Quantum Information and Quantum Physics and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xiao Zheng
- Hefei National Laboratory for Physical Sciences at the Microscale & Synergetic Innovation Center of Quantum Information and Quantum Physics and CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230026, China
- Department of Chemical Physics and Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shaul Mukamel
- Department of Chemistry and Department of Physics and Astronomy, University of California, Irvine, California 92697, USA
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33
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Angular dependence of the Wigner time delay upon tunnel ionization of H 2. Nat Commun 2021; 12:1697. [PMID: 33727546 PMCID: PMC7966791 DOI: 10.1038/s41467-021-21845-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 02/16/2021] [Indexed: 11/08/2022] Open
Abstract
When a very strong light field is applied to a molecule an electron can be ejected by tunneling. In order to quantify the time-resolved dynamics of this ionization process, the concept of the Wigner time delay can be used. The properties of this process can depend on the tunneling direction relative to the molecular axis. Here, we show experimental and theoretical data on the Wigner time delay for tunnel ionization of H2 molecules and demonstrate its dependence on the emission direction of the electron with respect to the molecular axis. We find, that the observed changes in the Wigner time delay can be quantitatively explained by elongated/shortened travel paths of the emitted electrons, which occur due to spatial shifts of the electrons' birth positions after tunneling. Our work provides therefore an intuitive perspective towards the Wigner time delay in strong-field ionization.
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34
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Saribal C, Owens A, Yachmenev A, Küpper J. Detecting handedness of spatially oriented molecules by Coulomb explosion imaging. J Chem Phys 2021; 154:071101. [PMID: 33607914 DOI: 10.1063/5.0029792] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present a new technique for detecting chirality in the gas phase: Chiral molecules are spatially aligned in three dimensions by a moderately strong elliptically polarized laser field. The momentum distributions of the charged fragments, produced by laser-induced Coulomb explosion, show distinct three-dimensional orientation of the enantiomers when the laser polarization ellipse is rotated by a non-right angle with respect to the norm vector of the detector plane. The resulting velocity-map-image asymmetry is directly connected to the enantiomeric excess and to the absolute handedness of molecules. We demonstrated our scheme computationally for camphor (C10H16O), with its methyl groups as marker fragments, using quantum-mechanical simulations geared toward experimentally feasible conditions. Computed sensitivity to enantiomeric excess is comparable to other modern chiroptical approaches. The present method can be readily optimized for any chiral molecule with an anisotropic polarizability tensor by adjusting the polarization state and intensity profile of the laser field.
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Affiliation(s)
- Cem Saribal
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Alec Owens
- Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - Andrey Yachmenev
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Jochen Küpper
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
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35
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Marroux HJB, Fidler AP, Ghosh A, Kobayashi Y, Gokhberg K, Kuleff AI, Leone SR, Neumark DM. Attosecond spectroscopy reveals alignment dependent core-hole dynamics in the ICl molecule. Nat Commun 2020; 11:5810. [PMID: 33199683 PMCID: PMC7669856 DOI: 10.1038/s41467-020-19496-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 10/13/2020] [Indexed: 11/08/2022] Open
Abstract
The removal of electrons located in the core shells of molecules creates transient states that live between a few femtoseconds to attoseconds. Owing to these short lifetimes, time-resolved studies of these states are challenging and complex molecular dynamics driven solely by electronic correlation are difficult to observe. Here, we obtain few-femtosecond core-excited state lifetimes of iodine monochloride by using attosecond transient absorption on iodine 4d-16p transitions around 55 eV. Core-level ligand field splitting allows direct access of excited states aligned along and perpendicular to the ICl molecular axis. Lifetimes of 3.5 ± 0.4 fs and 4.3 ± 0.4 fs are obtained for core-hole states parallel to the bond and 6.5 ± 0.6 fs and 6.9 ± 0.6 fs for perpendicular states, while nuclear motion is essentially frozen on this timescale. Theory shows that the dramatic decrease of lifetime for core-vacancies parallel to the covalent bond is a manifestation of non-local interactions with the neighboring Cl atom of ICl.
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Affiliation(s)
- Hugo J B Marroux
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA.
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
- Laboratoire de Spectroscopie Ultrarapide (LSU) and Lausanne Centre for Ultrafast Science (LACUS), Ecole Polytechnique Fédérale de Lausanne, ISIC, FSB, Station 6, CH-1015, Lausanne, Switzerland.
| | - Ashley P Fidler
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Aryya Ghosh
- Theoretische Chemie, PCI, Universität Heidelberg, Im Neuenheimer Feld 229, 69120, Heidelberg, Germany
| | - Yuki Kobayashi
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA
| | - Kirill Gokhberg
- Theoretische Chemie, PCI, Universität Heidelberg, Im Neuenheimer Feld 229, 69120, Heidelberg, Germany
| | - Alexander I Kuleff
- Theoretische Chemie, PCI, Universität Heidelberg, Im Neuenheimer Feld 229, 69120, Heidelberg, Germany
- ELI-ALPS, W. Sandner utca 3, Szeged, 6728, Hungary
| | - Stephen R Leone
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA.
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
- Department of Physics, University of California, Berkeley, CA, 94720, USA.
| | - Daniel M Neumark
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA.
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
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36
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Grundmann S, Trabert D, Fehre K, Strenger N, Pier A, Kaiser L, Kircher M, Weller M, Eckart S, Schmidt LPH, Trinter F, Jahnke T, Schöffler MS, Dörner R. Zeptosecond birth time delay in molecular photoionization. Science 2020; 370:339-341. [DOI: 10.1126/science.abb9318] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 08/26/2020] [Indexed: 11/02/2022]
Abstract
Photoionization is one of the fundamental light-matter interaction
processes in which the absorption of a photon launches the escape of an
electron. The time scale of this process poses many open questions.
Experiments have found time delays in the attosecond
(10−18 seconds) domain between electron ejection
from different orbitals, from different electronic bands, or in different
directions. Here, we demonstrate that, across a molecular orbital, the
electron is not launched at the same time. Rather, the birth time depends on
the travel time of the photon across the molecule, which is 247 zeptoseconds
(1 zeptosecond = 10−21 seconds) for the average bond
length of molecular hydrogen. Using an electron interferometric technique,
we resolve this birth time delay between electron emission from the two
centers of the hydrogen molecule.
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Affiliation(s)
- Sven Grundmann
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
| | - Daniel Trabert
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
| | - Kilian Fehre
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
| | - Nico Strenger
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
| | - Andreas Pier
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
| | - Leon Kaiser
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
| | - Max Kircher
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
| | - Miriam Weller
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
| | - Sebastian Eckart
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
| | - Lothar Ph. H. Schmidt
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
| | - Florian Trinter
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
- Photon Science, Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
- Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Till Jahnke
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
| | - Markus S. Schöffler
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
| | - Reinhard Dörner
- Institut für Kernphysik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
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37
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Zhong S, Vinbladh J, Busto D, Squibb RJ, Isinger M, Neoričić L, Laurell H, Weissenbilder R, Arnold CL, Feifel R, Dahlström JM, Wendin G, Gisselbrecht M, Lindroth E, L'Huillier A. Attosecond electron-spin dynamics in Xe 4d photoionization. Nat Commun 2020; 11:5042. [PMID: 33028822 PMCID: PMC7541461 DOI: 10.1038/s41467-020-18847-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 09/09/2020] [Indexed: 11/16/2022] Open
Abstract
The photoionization of xenon atoms in the 70–100 eV range reveals several fascinating physical phenomena such as a giant resonance induced by the dynamic rearrangement of the electron cloud after photon absorption, an anomalous branching ratio between intermediate Xe+ states separated by the spin-orbit interaction and multiple Auger decay processes. These phenomena have been studied in the past, using in particular synchrotron radiation, but without access to real-time dynamics. Here, we study the dynamics of Xe 4d photoionization on its natural time scale combining attosecond interferometry and coincidence spectroscopy. A time-frequency analysis of the involved transitions allows us to identify two interfering ionization mechanisms: the broad giant dipole resonance with a fast decay time less than 50 as, and a narrow resonance at threshold induced by spin-flip transitions, with much longer decay times of several hundred as. Our results provide insight into the complex electron-spin dynamics of photo-induced phenomena. Here the authors report experiment and theory study of the photoionization of xenon inner shell 4d electron using attosecond pulses. They have identified two ionization paths - one corresponding to broad giant dipole resonance with short decay time and the other involving spin-flip transitions.
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Affiliation(s)
- Shiyang Zhong
- Department of Physics, Lund University, P.O. Box 118, Lund, SE-221 00, Sweden.
| | - Jimmy Vinbladh
- Department of Physics, Stockholm University, AlbaNova University Center, Stockholm, SE-106 91, Sweden
| | - David Busto
- Department of Physics, Lund University, P.O. Box 118, Lund, SE-221 00, Sweden
| | - Richard J Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, Gothenburg, SE-412 96, Sweden
| | - Marcus Isinger
- Department of Physics, Lund University, P.O. Box 118, Lund, SE-221 00, Sweden
| | - Lana Neoričić
- Department of Physics, Lund University, P.O. Box 118, Lund, SE-221 00, Sweden
| | - Hugo Laurell
- Department of Physics, Lund University, P.O. Box 118, Lund, SE-221 00, Sweden
| | - Robin Weissenbilder
- Department of Physics, Lund University, P.O. Box 118, Lund, SE-221 00, Sweden
| | - Cord L Arnold
- Department of Physics, Lund University, P.O. Box 118, Lund, SE-221 00, Sweden
| | - Raimund Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, Gothenburg, SE-412 96, Sweden
| | | | - Göran Wendin
- Department of Microtechnology and Nanoscience-MC2, Chalmers University of Technology, Gothenburg, SE-412 96, Sweden
| | | | - Eva Lindroth
- Department of Physics, Stockholm University, AlbaNova University Center, Stockholm, SE-106 91, Sweden
| | - Anne L'Huillier
- Department of Physics, Lund University, P.O. Box 118, Lund, SE-221 00, Sweden
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38
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Fedorov N, Beaulieu S, Belsky A, Blanchet V, Bouillaud R, De Anda Villa M, Filippov A, Fourment C, Gaudin J, Grisenti RE, Lamour E, Lévy A, Macé S, Mairesse Y, Martin P, Martinez P, Noé P, Papagiannouli I, Patanen M, Petit S, Vernhet D, Veyrinas K, Descamps D. Aurore: A platform for ultrafast sciences. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:105104. [PMID: 33138551 DOI: 10.1063/5.0012485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 09/16/2020] [Indexed: 06/11/2023]
Abstract
We present the Aurore platform for ultrafast sciences. This platform is based on a unique 20 W, 1 kHz, 26 fs Ti:sapphire laser system designed for reliable operation and high intensity temporal contrast. The specific design ensures the high stability in terms of pulse duration, energy, and beam pointing necessary for extended experimental campaigns. The laser supplies 5 different beamlines, all dedicated to a specific field: attosecond science (Aurore 1), ultrafast phase transitions in solids (Aurore 2 and 3), ultrafast luminescence in solids (Aurore 4), and femtochemistry (Aurore 5). The technical specifications of these five beamlines are described in detail, and examples of the recent results are given.
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Affiliation(s)
- N Fedorov
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, F-33405 Talence, France
| | - S Beaulieu
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, F-33405 Talence, France
| | - A Belsky
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, F-33405 Talence, France
| | - V Blanchet
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, F-33405 Talence, France
| | - R Bouillaud
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, F-33405 Talence, France
| | - M De Anda Villa
- Sorbonne Université, CNRS, UMR 7588, Institut des Nanosciences de Paris, INSP, Campus Pierre et Marie Curie, F-75252 Paris Cedex 05, France
| | - A Filippov
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, F-33405 Talence, France
| | - C Fourment
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, F-33405 Talence, France
| | - J Gaudin
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, F-33405 Talence, France
| | - R E Grisenti
- Institut für Kernphysik, J. W. Goethe Universität, Max von Laue Str. 1, 60438 Frankfurt am Main, Germany
| | - E Lamour
- Sorbonne Université, CNRS, UMR 7588, Institut des Nanosciences de Paris, INSP, Campus Pierre et Marie Curie, F-75252 Paris Cedex 05, France
| | - A Lévy
- Sorbonne Université, CNRS, UMR 7588, Institut des Nanosciences de Paris, INSP, Campus Pierre et Marie Curie, F-75252 Paris Cedex 05, France
| | - S Macé
- Sorbonne Université, CNRS, UMR 7588, Institut des Nanosciences de Paris, INSP, Campus Pierre et Marie Curie, F-75252 Paris Cedex 05, France
| | - Y Mairesse
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, F-33405 Talence, France
| | - P Martin
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, F-33405 Talence, France
| | - P Martinez
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, F-33405 Talence, France
| | - P Noé
- Université Grenoble Alpes, CEA-LETI, 17 rue des Martyrs, F-38054 Grenoble Cedex 9, France
| | - I Papagiannouli
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, F-33405 Talence, France
| | - M Patanen
- Nano and Molecular Systems Research Unit, Faculty of Science, University of Oulu, P.O. Box 3000, FI-90014 Oulu, Finland
| | - S Petit
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, F-33405 Talence, France
| | - D Vernhet
- Sorbonne Université, CNRS, UMR 7588, Institut des Nanosciences de Paris, INSP, Campus Pierre et Marie Curie, F-75252 Paris Cedex 05, France
| | - K Veyrinas
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, F-33405 Talence, France
| | - D Descamps
- Université de Bordeaux - CNRS - CEA, CELIA, UMR5107, F-33405 Talence, France
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39
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Abstract
We investigated theoretically the time dependence of ultra-short laser pulse scattering by an atom at the high-frequency limit for the spectral and total probability of the process using new expression which we derived in this paper. We established that the time dependence of spectral scattering is presented by the curve with the maximum for sufficiently large detuning of scattering frequency from the carrier frequency of the pulse, while the total scattering probability is always the monotonically increasing function of time. We also studied the dependence of scattering probability on pulse duration at the long-time limit. It was shown that, at the long-pulse limit, the scattering probability is a linear function of pulse duration, while in the opposite case, it is a function with maximum. The position of this maximum is determined by the detuning of the scattering frequency from the carrier frequency of the pulse.
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40
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Makos I, Orfanos I, Nayak A, Peschel J, Major B, Liontos I, Skantzakis E, Papadakis N, Kalpouzos C, Dumergue M, Kühn S, Varju K, Johnsson P, L'Huillier A, Tzallas P, Charalambidis D. Α 10-gigawatt attosecond source for non-linear XUV optics and XUV-pump-XUV-probe studies. Sci Rep 2020; 10:3759. [PMID: 32111920 PMCID: PMC7048767 DOI: 10.1038/s41598-020-60331-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 01/29/2020] [Indexed: 11/09/2022] Open
Abstract
The quantum mechanical motion of electrons and nuclei in systems spatially confined to the molecular dimensions occurs on the sub-femtosecond to the femtosecond timescales respectively. Consequently, the study of ultrafast electronic and, in specific cases, nuclear dynamics requires the availability of light pulses with attosecond (asec) duration and of sufficient intensity to induce two-photon processes, essential for probing the intrinsic system dynamics. The majority of atoms, molecules and solids absorb in the extreme-ultraviolet (XUV) spectral region, in which the synthesis of the required attosecond pulses is feasible. Therefore, the XUV spectral region optimally serves the study of such ultrafast phenomena. Here, we present a detailed review of the first 10-GW class XUV attosecond source based on laser driven high harmonic generation in rare gases. The pulse energy of this source largely exceeds other laser driven attosecond sources and is comparable to the pulse energy of femtosecond Free-Electron-Laser (FEL) XUV sources. The measured pulse duration in the attosecond pulse train is 650 ± 80 asec. The uniqueness of the combined high intensity and short pulse duration of the source is evidenced in non-linear XUV-optics experiments. It further advances the implementation of XUV-pump-XUV-probe experiments and enables the investigation of strong field effects in the XUV spectral region.
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Affiliation(s)
- I Makos
- Foundation for Research and Technology - Hellas, Institute of Electronic Structure & Laser, GR71110, Heraklion, Crete, Greece.,Department of Physics, University of Crete, GR71003, Heraklion, Crete, Greece
| | - I Orfanos
- Foundation for Research and Technology - Hellas, Institute of Electronic Structure & Laser, GR71110, Heraklion, Crete, Greece.,Department of Physics, University of Crete, GR71003, Heraklion, Crete, Greece
| | - A Nayak
- Foundation for Research and Technology - Hellas, Institute of Electronic Structure & Laser, GR71110, Heraklion, Crete, Greece.,ELI-ALPS, ELI-Hu Non-Profit Ltd., Dugonics tér 13, H-6720, Szeged, Hungary.,Institute of Physics, University of Szeged, Dom tér 9, 6720, Szeged, Hungary
| | - J Peschel
- Department of Physics, Lund University, SE-221 00, Lund, Sweden
| | - B Major
- ELI-ALPS, ELI-Hu Non-Profit Ltd., Dugonics tér 13, H-6720, Szeged, Hungary
| | - I Liontos
- Foundation for Research and Technology - Hellas, Institute of Electronic Structure & Laser, GR71110, Heraklion, Crete, Greece
| | - E Skantzakis
- Foundation for Research and Technology - Hellas, Institute of Electronic Structure & Laser, GR71110, Heraklion, Crete, Greece
| | - N Papadakis
- Foundation for Research and Technology - Hellas, Institute of Electronic Structure & Laser, GR71110, Heraklion, Crete, Greece
| | - C Kalpouzos
- Foundation for Research and Technology - Hellas, Institute of Electronic Structure & Laser, GR71110, Heraklion, Crete, Greece
| | - M Dumergue
- ELI-ALPS, ELI-Hu Non-Profit Ltd., Dugonics tér 13, H-6720, Szeged, Hungary
| | - S Kühn
- ELI-ALPS, ELI-Hu Non-Profit Ltd., Dugonics tér 13, H-6720, Szeged, Hungary
| | - K Varju
- ELI-ALPS, ELI-Hu Non-Profit Ltd., Dugonics tér 13, H-6720, Szeged, Hungary.,Department of Optics and Quantum Electronics, University of Szeged, Dom tér 9, 6720, Szeged, Hungary
| | - P Johnsson
- Department of Physics, Lund University, SE-221 00, Lund, Sweden
| | - A L'Huillier
- Department of Physics, Lund University, SE-221 00, Lund, Sweden
| | - P Tzallas
- Foundation for Research and Technology - Hellas, Institute of Electronic Structure & Laser, GR71110, Heraklion, Crete, Greece.,ELI-ALPS, ELI-Hu Non-Profit Ltd., Dugonics tér 13, H-6720, Szeged, Hungary
| | - D Charalambidis
- Foundation for Research and Technology - Hellas, Institute of Electronic Structure & Laser, GR71110, Heraklion, Crete, Greece. .,Department of Physics, University of Crete, GR71003, Heraklion, Crete, Greece. .,ELI-ALPS, ELI-Hu Non-Profit Ltd., Dugonics tér 13, H-6720, Szeged, Hungary.
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41
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Müller AD, Kutscher E, Artemyev AN, Demekhin PV. Photoelectron circular dichroism in the multiphoton ionization by short laser pulses. III. Photoionization of fenchone in different regimes. J Chem Phys 2020; 152:044302. [PMID: 32007036 DOI: 10.1063/1.5139608] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Photoelectron circular dichroism (PECD) in different regimes of multiphoton ionization of fenchone is studied theoretically using the time-dependent single center method. In particular, we investigate the chiral response to the one-color multiphoton or strong-field ionization by circularly polarized 400 nm and 814 nm optical laser pulses or 1850 nm infrared pulse. In addition, the broadband ionization by short coherent circularly polarized 413-1240 nm spanning pulse is considered. Finally, the two-color ionization by the phase-locked 400 nm and 800 nm pulses, which are linearly polarized in mutually orthogonal directions, is investigated. The present computational results on the one-color multiphoton ionization of fenchone are in agreement with the available experimental data. For the ionization of fenchone by broadband and bichromatic pulses, the present theoretical study predicts substantial multiphoton PECDs.
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Affiliation(s)
- Anne D Müller
- Institute of Physics and CINSaT, University of Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
| | - Eric Kutscher
- Institute of Physics and CINSaT, University of Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
| | - Anton N Artemyev
- Institute of Physics and CINSaT, University of Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
| | - Philipp V Demekhin
- Institute of Physics and CINSaT, University of Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
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42
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Yuan KJ, Bandrauk AD. Ultrafast X-ray photoelectron diffraction in triatomic molecules by circularly polarized attosecond light pulses. Phys Chem Chem Phys 2020; 22:325-336. [DOI: 10.1039/c9cp05213e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We theoretically study ultrafast photoelectron diffraction in triatomic molecules with cyclic geometry by ultrafast circular soft X-ray attosecond pulses.
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Affiliation(s)
- Kai-Jun Yuan
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun
- China
- Laboratoire de Chimie Théorique
| | - André D. Bandrauk
- Laboratoire de Chimie Théorique
- Faculté des Sciences
- Université de Sherbrooke
- Québec
- Canada
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43
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Yachmenev A, Onvlee J, Zak E, Owens A, Küpper J. Field-Induced Diastereomers for Chiral Separation. PHYSICAL REVIEW LETTERS 2019; 123:243202. [PMID: 31922822 DOI: 10.1103/physrevlett.123.243202] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Indexed: 06/10/2023]
Abstract
A novel approach for the state-specific enantiomeric enrichment and the spatial separation of enantiomers is presented. Our scheme utilizes techniques from strong-field laser physics-specifically an optical centrifuge in conjunction with a static electric field-to create a chiral field with defined handedness. Molecular enantiomers experience unique rotational excitation dynamics, and this can be exploited to spatially separate the enantiomers using electrostatic deflection. Notably, the rotational-state-specific enantiomeric enhancement and its handedness are fully controllable. To explain these effects, the conceptual framework of field-induced diastereomers of a chiral molecule is introduced and computationally demonstrated through robust quantum-mechanical simulations on the prototypical chiral molecule propylene oxide (C_{3}H_{6}O), for which ensembles with an enantiomeric excess of up to 30% were obtained.
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Affiliation(s)
- Andrey Yachmenev
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- Center for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Jolijn Onvlee
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Emil Zak
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Alec Owens
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- Center for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
- Department of Physics and Astronomy, University College London, Gower Street, WC1E 6BT London, United Kingdom
| | - Jochen Küpper
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- Center for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
- Department of Physics, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
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44
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Busto D, Vinbladh J, Zhong S, Isinger M, Nandi S, Maclot S, Johnsson P, Gisselbrecht M, L'Huillier A, Lindroth E, Dahlström JM. Fano's Propensity Rule in Angle-Resolved Attosecond Pump-Probe Photoionization. PHYSICAL REVIEW LETTERS 2019; 123:133201. [PMID: 31697513 DOI: 10.1103/physrevlett.123.133201] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 05/24/2019] [Indexed: 06/10/2023]
Abstract
In a seminal article, Fano predicts that absorption of light occurs preferably with increase of angular momentum. We generalize Fano's propensity rule to laser-assisted photoionization, consisting of absorption of an extreme-ultraviolet photon followed by absorption or emission of an infrared photon. The predicted asymmetry between absorption and emission leads to incomplete quantum interference in attosecond photoelectron interferometry. It explains both the angular dependence of the photoionization time delays and the delay dependence of the photoelectron angular distributions. Our theory is verified by experimental results in Ar in the 20-40 eV range.
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Affiliation(s)
- David Busto
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - Jimmy Vinbladh
- Department of Physics, Stockholm University, AlbaNova University Center, SE-106 91 Stockholm, Sweden
| | - Shiyang Zhong
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - Marcus Isinger
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - Saikat Nandi
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - Sylvain Maclot
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
- Biomedical and X-Ray Physics, Department of Applied Physics, AlbaNova University Center, KTH Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - Per Johnsson
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | | | - Anne L'Huillier
- Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - Eva Lindroth
- Department of Physics, Stockholm University, AlbaNova University Center, SE-106 91 Stockholm, Sweden
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45
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Donsa S, Douguet N, Burgdörfer J, Březinová I, Argenti L. Circular Holographic Ionization-Phase Meter. PHYSICAL REVIEW LETTERS 2019; 123:133203. [PMID: 31697555 DOI: 10.1103/physrevlett.123.133203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Indexed: 06/10/2023]
Abstract
We propose an attosecond extreme ultraviolet pump IR-probe photoionization protocol that employs pairs of counterrotating consecutive harmonics and angularly resolved photoelectron detection, thereby providing a direct measurement of ionization phases. The present method, which we call circular holographic ionization-phase meter, gives also access to the phase of photoemission amplitudes of even-parity continuum states from a single time-delay measurement since the relative phase of one- and two-photon ionization pathways is imprinted in the photoemission anisotropy. The method is illustrated with ab initio simulations of photoionization via autoionizing resonances in helium. The rapid phase excursion in the transition amplitude to both the dipole-allowed (2s2p)^{1}P^{o} and the dipole-forbidden (2p^{2})^{1}D^{e} states are faithfully reproduced.
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Affiliation(s)
- S Donsa
- Institute for Theoretical Physics, Vienna University of Technology, A-1040 Vienna, Austria, EU
| | - N Douguet
- Department of Physics, University of Central Florida, Orlando, Florida 32816, USA
| | - J Burgdörfer
- Institute for Theoretical Physics, Vienna University of Technology, A-1040 Vienna, Austria, EU
| | - I Březinová
- Institute for Theoretical Physics, Vienna University of Technology, A-1040 Vienna, Austria, EU
| | - L Argenti
- Department of Physics, University of Central Florida, Orlando, Florida 32816, USA
- CREOL, University of Central Florida, Orlando, Florida 32816, USA
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46
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Milner AA, Fordyce JAM, MacPhail-Bartley I, Wasserman W, Milner V, Tutunnikov I, Averbukh IS. Controlled Enantioselective Orientation of Chiral Molecules with an Optical Centrifuge. PHYSICAL REVIEW LETTERS 2019; 122:223201. [PMID: 31283279 DOI: 10.1103/physrevlett.122.223201] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Indexed: 06/09/2023]
Abstract
We report on the first experimental demonstration of enantioselective rotational control of chiral molecules with a laser field. In our experiments, two enantiomers of propylene oxide are brought to accelerated unidirectional rotation by means of an optical centrifuge. Using Coulomb explosion imaging, we show that the centrifuged molecules acquire preferential orientation perpendicular to the plane of rotation, and that the direction of this orientation depends on the relative handedness of the enantiomer and the rotating centrifuge field. The observed effect is in agreement with theoretical predictions and is reproduced in numerical simulations of the centrifuge excitation followed by Coulomb explosion of the centrifuged molecules. The demonstrated technique opens new avenues in optical enantioselective control of chiral molecules with a plethora of potential applications in differentiation, separation, and purification of chiral mixtures.
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Affiliation(s)
- Alexander A Milner
- Department of Physics & Astronomy, The University of British Columbia, V6T-1Z1 Vancouver, Canada
| | - Jordan A M Fordyce
- Department of Physics & Astronomy, The University of British Columbia, V6T-1Z1 Vancouver, Canada
| | - Ian MacPhail-Bartley
- Department of Physics & Astronomy, The University of British Columbia, V6T-1Z1 Vancouver, Canada
| | - Walter Wasserman
- Department of Physics & Astronomy, The University of British Columbia, V6T-1Z1 Vancouver, Canada
| | - Valery Milner
- Department of Physics & Astronomy, The University of British Columbia, V6T-1Z1 Vancouver, Canada
| | - Ilia Tutunnikov
- AMOS and Department of Chemical and Biological Physics, The Weizmann Institute of Science, 76100 Rehovot, Israel
| | - Ilya Sh Averbukh
- AMOS and Department of Chemical and Biological Physics, The Weizmann Institute of Science, 76100 Rehovot, Israel
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47
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Isinger M, Busto D, Mikaelsson S, Zhong S, Guo C, Salières P, Arnold CL, L'Huillier A, Gisselbrecht M. Accuracy and precision of the RABBIT technique. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2019; 377:20170475. [PMID: 30929623 PMCID: PMC6452058 DOI: 10.1098/rsta.2017.0475] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/10/2019] [Indexed: 05/29/2023]
Abstract
One of the most ubiquitous techniques within attosecond science is the so-called reconstruction of attosecond beating by interference of two-photon transitions (RABBIT). Originally proposed for the characterization of attosecond pulses, it has been successfully applied to the accurate determination of time delays in photoemission. Here, we examine in detail, using numerical simulations, the effect of the spatial and temporal properties of the light fields and of the experimental procedure on the accuracy of the method. This allows us to identify the necessary conditions to achieve the best temporal precision in RABBIT measurements. This article is part of the theme issue 'Measurement of ultrafast electronic and structural dynamics with X-rays'.
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Affiliation(s)
- M. Isinger
- Department of Physics, Lund University, PO Box 118, 22 100 Lund, Sweden
| | - D. Busto
- Department of Physics, Lund University, PO Box 118, 22 100 Lund, Sweden
| | - S. Mikaelsson
- Department of Physics, Lund University, PO Box 118, 22 100 Lund, Sweden
| | - S. Zhong
- Department of Physics, Lund University, PO Box 118, 22 100 Lund, Sweden
| | - C. Guo
- Department of Physics, Lund University, PO Box 118, 22 100 Lund, Sweden
| | - P. Salières
- LIDYL, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, France
| | - C. L. Arnold
- Department of Physics, Lund University, PO Box 118, 22 100 Lund, Sweden
| | - A. L'Huillier
- Department of Physics, Lund University, PO Box 118, 22 100 Lund, Sweden
| | - M. Gisselbrecht
- Department of Physics, Lund University, PO Box 118, 22 100 Lund, Sweden
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48
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Geneaux R, Marroux HJB, Guggenmos A, Neumark DM, Leone SR. Transient absorption spectroscopy using high harmonic generation: a review of ultrafast X-ray dynamics in molecules and solids. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2019; 377:20170463. [PMID: 30929624 PMCID: PMC6452051 DOI: 10.1098/rsta.2017.0463] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/27/2018] [Indexed: 05/07/2023]
Abstract
Attosecond science opened the door to observing nuclear and electronic dynamics in real time and has begun to expand beyond its traditional grounds. Among several spectroscopic techniques, X-ray transient absorption spectroscopy has become key in understanding matter on ultrafast time scales. In this review, we illustrate the capabilities of this unique tool through a number of iconic experiments. We outline how coherent broadband X-ray radiation, emitted in high-harmonic generation, can be used to follow dynamics in increasingly complex systems. Experiments performed in both molecules and solids are discussed at length, on time scales ranging from attoseconds to picoseconds, and in perturbative or strong-field excitation regimes. This article is part of the theme issue 'Measurement of ultrafast electronic and structural dynamics with X-rays'.
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Affiliation(s)
- Romain Geneaux
- Department of Chemistry, University of California, Berkeley 94720, CA, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley 94720, CA, USA
| | - Hugo J. B. Marroux
- Department of Chemistry, University of California, Berkeley 94720, CA, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley 94720, CA, USA
| | - Alexander Guggenmos
- Department of Chemistry, University of California, Berkeley 94720, CA, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley 94720, CA, USA
| | - Daniel M. Neumark
- Department of Chemistry, University of California, Berkeley 94720, CA, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley 94720, CA, USA
| | - Stephen R. Leone
- Department of Chemistry, University of California, Berkeley 94720, CA, USA
- Department of Physics, University of California, Berkeley 94720, CA, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley 94720, CA, USA
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49
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Probing Attosecond Electron Coherence in Molecular Charge Migration by Ultrafast X-Ray Photoelectron Imaging. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9091941] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Electron coherence is a fundamental quantum phenomenon in today’s ultrafast physics and chemistry research. Based on attosecond pump–probe schemes, ultrafast X-ray photoelectron imaging of molecules was used to monitor the coherent electron dynamics which is created by an XUV pulse. We performed simulations on the molecular ion H 2 + by numerically solving time-dependent Schrödinger equations. It was found that the X-ray photoelectron angular and momentum distributions depend on the time delay between the XUV pump and soft X-ray probe pulses. Varying the polarization and helicity of the soft X-ray probe pulse gave rise to a modulation of the time-resolved photoelectron distributions. The present results provide a new approach for exploring ultrafast coherent electron dynamics and charge migration in reactions of molecules on the attosecond time scale.
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Abstract
A proposal for building a Free Electron Laser, EuPRAXIA@SPARC_LAB, at the Laboratori Nazionali di Frascati, is at present under consideration. This FEL facility will provide a unique combination of a high brightness GeV-range electron beam generated in a X-band RF linac, a 0.5 PW-class laser system and the first FEL source driven by a plasma accelerator. The FEL will produce ultra-bright pulses, with up to 10 12 photons/pulse, femtosecond timescale and wavelength down to 3 nm, which lies in the so called “water window”. The experimental activity will be focused on the realization of a plasma driven short wavelength FEL able to provide high-quality photons for a user beamline. In this paper, we describe the main classes of experiments that will be performed at the facility, including coherent diffraction imaging, soft X-ray absorption spectroscopy, Raman spectroscopy, Resonant Inelastic X-ray Scattering and photofragmentation measurements. These techniques will allow studying a variety of samples, both biological and inorganic, providing information about their structure and dynamical behavior. In this context, the possibility of inducing changes in samples via pump pulses leading to the stimulation of chemical reactions or the generation of coherent excitations would tremendously benefit from pulses in the soft X-ray region. High power synchronized optical lasers and a TeraHertz radiation source will indeed be made available for THz and pump–probe experiments and a split-and-delay station will allow performing XUV-XUV pump–probe experiments.
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