1
|
Golubev NV, Vaníček J, Kuleff AI. Core-Valence Attosecond Transient Absorption Spectroscopy of Polyatomic Molecules. PHYSICAL REVIEW LETTERS 2021; 127:123001. [PMID: 34597071 DOI: 10.1103/physrevlett.127.123001] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 07/01/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
Tracing ultrafast processes induced by interaction of light with matter is often very challenging. In molecular systems, the initially created electronic coherence becomes damped by the slow nuclear rearrangement on a femtosecond timescale which makes real-time observations of electron dynamics in molecules particularly difficult. In this work, we report an extension of the theory underlying the attosecond transient absorption spectroscopy (ATAS) for the case of molecules, including a full account for the coupled electron-nuclear dynamics in the initially created wave packet, and apply it to probe the oscillations of the positive charge created after outer-valence ionization of the propiolic acid molecule. By taking advantage of element-specific core-to-valence transitions induced by x-ray radiation, we show that the resolution of ATAS makes it possible to trace the dynamics of electron density with atomic spatial resolution.
Collapse
Affiliation(s)
- Nikolay V Golubev
- Laboratory of Theoretical Physical Chemistry, Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Jiří Vaníček
- Laboratory of Theoretical Physical Chemistry, Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Alexander I Kuleff
- Theoretische Chemie, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany and ELI-ALPS, Wolfgang Sandner utca 3, H-6728 Szeged, Hungary
| |
Collapse
|
2
|
Alismail A, Wang H, Barbiero G, Altwaijry N, Hussain SA, Pervak V, Schweinberger W, Azzeer AM, Krausz F, Fattahi H. Multi-octave, CEP-stable source for high-energy field synthesis. SCIENCE ADVANCES 2020; 6:eaax3408. [PMID: 32110723 PMCID: PMC7021495 DOI: 10.1126/sciadv.aax3408] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Accepted: 11/26/2019] [Indexed: 05/25/2023]
Abstract
The development of high-energy, high-power, multi-octave light transients is currently the subject of intense research driven by emerging applications in attosecond spectroscopy and coherent control. We report on a phase-stable, multi-octave source based on a Yb:YAG amplifier for light transient generation. We demonstrate the amplification of a two-octave spectrum to 25 μJ of energy in two broadband amplification channels and their temporal compression to 6 and 18 fs at 1 and 2 μm, respectively. In this scheme, due to the intrinsic temporal synchronization between the pump and seed pulses, the temporal jitter is restricted to long-term drift. We show that the intrinsic stability of the synthesizer allows subcycle detection of an electric field at 0.15 PHz. The complex electric field of the 0.15-PHz pulses and their free induction decay after interaction with water molecules are resolved by electro-optic sampling over 2 ps. The scheme is scalable in peak and average power.
Collapse
Affiliation(s)
- Ayman Alismail
- Ludwig-Maximilians-University of Munich, Faculty of Physics, Am Coulombwall 1, 85748 Garching, Germany
- Physics and Astronomy Department, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Haochuan Wang
- Ludwig-Maximilians-University of Munich, Faculty of Physics, Am Coulombwall 1, 85748 Garching, Germany
- Max Planck Institute of Quantum Optics, Hans-Kopfermann-Str. 1, 85748 Garching, Germany
| | - Gaia Barbiero
- Ludwig-Maximilians-University of Munich, Faculty of Physics, Am Coulombwall 1, 85748 Garching, Germany
- Max Planck Institute of Quantum Optics, Hans-Kopfermann-Str. 1, 85748 Garching, Germany
| | - Najd Altwaijry
- Ludwig-Maximilians-University of Munich, Faculty of Physics, Am Coulombwall 1, 85748 Garching, Germany
- Max Planck Institute of Quantum Optics, Hans-Kopfermann-Str. 1, 85748 Garching, Germany
| | - Syed Ali Hussain
- Ludwig-Maximilians-University of Munich, Faculty of Physics, Am Coulombwall 1, 85748 Garching, Germany
- Max Planck Institute of Quantum Optics, Hans-Kopfermann-Str. 1, 85748 Garching, Germany
| | - Volodymyr Pervak
- Ludwig-Maximilians-University of Munich, Faculty of Physics, Am Coulombwall 1, 85748 Garching, Germany
| | - Wolfgang Schweinberger
- Ludwig-Maximilians-University of Munich, Faculty of Physics, Am Coulombwall 1, 85748 Garching, Germany
| | - Abdallah M. Azzeer
- Physics and Astronomy Department, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ferenc Krausz
- Ludwig-Maximilians-University of Munich, Faculty of Physics, Am Coulombwall 1, 85748 Garching, Germany
- Max Planck Institute of Quantum Optics, Hans-Kopfermann-Str. 1, 85748 Garching, Germany
| | - Hanieh Fattahi
- Ludwig-Maximilians-University of Munich, Faculty of Physics, Am Coulombwall 1, 85748 Garching, Germany
- Max Planck Institute of Quantum Optics, Hans-Kopfermann-Str. 1, 85748 Garching, Germany
| |
Collapse
|
3
|
Kobayashi Y, Reduzzi M, Chang KF, Timmers H, Neumark DM, Leone SR. Selectivity of Electronic Coherence and Attosecond Ionization Delays in Strong-Field Double Ionization. PHYSICAL REVIEW LETTERS 2018; 120:233201. [PMID: 29932679 DOI: 10.1103/physrevlett.120.233201] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Indexed: 05/16/2023]
Abstract
Experiments are presented on real-time probing of coherent electron dynamics in xenon initiated by strong-field double ionization. Attosecond transient absorption measurements allow for characterization of electronic coherences as well as relative ionization timings in multiple electronic states of Xe^{+} and Xe^{2+}. A high degree of coherence g=0.4 is observed between ^{3}P_{2}^{0}-^{3}P_{0}^{0} of Xe^{2+}, whereas for other possible pairs of states the coherences are below the detection limits of the experiments. A comparison of the experimental results with numerical simulations based on an uncorrelated electron-emission model shows that the coherences produced by strong-field double ionization are more selective than predicted. Surprisingly short ionization time delays, 0.85 fs, 0.64 fs, and 0.75 fs relative to Xe^{+} formation, are also measured for the ^{3}P_{2}, ^{3}P_{0}, and ^{3}P_{1} states of Xe^{2+}, respectively. Both the unpredicted selectivity in the formation of coherence and the subfemtosecond time delays of specific states provide new insight into correlated electron dynamics in strong-field double ionization.
Collapse
Affiliation(s)
- Yuki Kobayashi
- Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - Maurizio Reduzzi
- Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - Kristina F Chang
- Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - Henry Timmers
- Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - Daniel M Neumark
- Department of Chemistry, University of California, Berkeley, California 94720, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Stephen R Leone
- Department of Chemistry, University of California, Berkeley, California 94720, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Physics, University of California, Berkeley, California 94720, USA
| |
Collapse
|
4
|
Wahyutama IS, Tadesse GK, Tünnermann A, Limpert J, Rothhardt J. Influence of detector noise in holographic imaging with limited photon flux. OPTICS EXPRESS 2016; 24:22013-22027. [PMID: 27661936 DOI: 10.1364/oe.24.022013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Lensless coherent diffractive imaging usually requires iterative phase-retrieval for recovering the missing phase information. Holographic techniques, such as Fourier-transform holography (FTH) or holography with extended references (HERALDO), directly provide this phase information and thus allow for a direct non-iterative reconstruction of the sample. In this paper, we analyze the effect of detector noise on the reconstruction for FTH and HERALDO with linear and rectangular references. We find that HERALDO is more sensitive to this type of noise than FTH, especially if rectangular references are employed. This excessive noise, caused by the necessary differentiation step(s) during reconstruction in case of HERALDO, additionally depends on the numerical implementation. When considering both shot-noise and detector noise, we find that FTH provides a better signal-to-noise ratio (SNR) than HERALDO if the available photon flux from the light source is low. In contrast, at high photon flux HERALDO provides better SNR and resolution than FTH. Our findings will help in designing optimum holographic imaging experiments particularly in the photon-flux-limited regime where most ultrafast experiments operate.
Collapse
|
5
|
Ramasesha K, Leone SR, Neumark DM. Real-Time Probing of Electron Dynamics Using Attosecond Time-Resolved Spectroscopy. Annu Rev Phys Chem 2016; 67:41-63. [DOI: 10.1146/annurev-physchem-040215-112025] [Citation(s) in RCA: 136] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Krupa Ramasesha
- Department of Chemistry, University of California, Berkeley, California 94720;
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94550
| | - Stephen R. Leone
- Department of Chemistry, University of California, Berkeley, California 94720;
- Department of Physics, University of California, Berkeley, California 94720
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720
| | - Daniel M. Neumark
- Department of Chemistry, University of California, Berkeley, California 94720;
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720
| |
Collapse
|
6
|
Neukirch AJ, Neumark DM, Kling MF, Prezhdo OV. Resolving multi-exciton generation by attosecond spectroscopy. OPTICS EXPRESS 2014; 22:26285-26293. [PMID: 25401661 DOI: 10.1364/oe.22.026285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We propose an experimentally viable attosecond transient absorption spectroscopy scheme to resolve controversies regarding multiexciton (ME) generation in nanoscale systems. Absence of oscillations indicates that light excites single excitons, and MEs are created by incoherent impact ionization. An oscillation indicates the coherent mechanism, involving excitation of superpositions of single and MEs. The oscillation decay, ranging from 5 fs at ambient temperature to 20 fs at 100 K, gives the elastic exciton-phonon scattering time. The signal is best observed with multiple-cycle pump pulses.
Collapse
|
7
|
Sayres SG, Hosler ER, Leone SR. Exposing the Role of Electron Correlation in Strong-Field Double Ionization: X-ray Transient Absorption of Orbital Alignment in Xe+ and Xe2+. J Phys Chem A 2014; 118:8614-24. [DOI: 10.1021/jp503468u] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Scott G. Sayres
- Departments
of Chemistry
and Physics, University of California at Berkeley, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Erik R. Hosler
- Departments
of Chemistry
and Physics, University of California at Berkeley, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Stephen R. Leone
- Departments
of Chemistry
and Physics, University of California at Berkeley, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| |
Collapse
|
8
|
Pfeiffer AN, Sayres SG, Leone SR. Calculation of valence electron motion induced by sequential strong-field ionisation. Mol Phys 2013. [DOI: 10.1080/00268976.2013.801527] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Adrian N. Pfeiffer
- Department of Chemistry, University of California at Berkeley , Berkeley, California, USA
- Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California, USA
| | - Scott G. Sayres
- Department of Chemistry, University of California at Berkeley , Berkeley, California, USA
| | - Stephen R. Leone
- Department of Chemistry, University of California at Berkeley , Berkeley, California, USA
- Department of Physics, University of California at Berkeley , Berkeley, California, USA
- Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California, USA
| |
Collapse
|