1
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Chretien A, Nagel MF, Botha S, de Wijn R, Brings L, Dörner K, Han H, Koliyadu JCP, Letrun R, Round A, Sato T, Schmidt C, Secareanu RC, von Stetten D, Vakili M, Wrona A, Bean R, Mancuso A, Schulz J, Pearson AR, Kottke T, Lorenzen K, Schubert R. Light-induced Trp in/Met out Switching During BLUF Domain Activation in ATP-bound Photoactivatable Adenylate Cyclase OaPAC. J Mol Biol 2024; 436:168439. [PMID: 38185322 DOI: 10.1016/j.jmb.2024.168439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/28/2023] [Accepted: 01/03/2024] [Indexed: 01/09/2024]
Abstract
The understanding of signal transduction mechanisms in photoreceptor proteins is essential for elucidating how living organisms respond to light as environmental stimuli. In this study, we investigated the ATP binding, photoactivation and signal transduction process in the photoactivatable adenylate cyclase from Oscillatoria acuminata (OaPAC) upon blue light excitation. Structural models with ATP bound in the active site of native OaPAC at cryogenic as well as room temperature are presented. ATP is found in one conformation at cryogenic- and in two conformations at ambient-temperature, and is bound in an energetically unfavorable conformation for the conversion to cAMP. However, FTIR spectroscopic experiments confirm that this conformation is the native binding mode in dark state OaPAC and that transition to a productive conformation for ATP turnover only occurs after light activation. A combination of time-resolved crystallography experiments at synchrotron and X-ray Free Electron Lasers sheds light on the early events around the Flavin Adenine Dinucleotide (FAD) chromophore in the light-sensitive BLUF domain of OaPAC. Early changes involve the highly conserved amino acids Tyr6, Gln48 and Met92. Crucially, the Gln48 side chain performs a 180° rotation during activation, leading to the stabilization of the FAD chromophore. Cryo-trapping experiments allowed us to investigate a late light-activated state of the reaction and revealed significant conformational changes in the BLUF domain around the FAD chromophore. In particular, a Trpin/Metout transition upon illumination is observed for the first time in the BLUF domain and its role in signal transmission via α-helix 3 and 4 in the linker region between sensor and effector domain is discussed.
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Affiliation(s)
- Anaïs Chretien
- European XFEL GmbH, Schenefeld, Germany; Department of Chemistry, Universität Hamburg, Hamburg, Germany
| | - Marius F Nagel
- Department of Chemistry and Medical School OWL, Bielefeld University, Bielefeld, Germany
| | - Sabine Botha
- Department of Physics, Arizona State University, Tempe, AZ 85287-1504, USA; Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, AZ 85287-5001, USA
| | | | | | | | | | | | | | | | | | | | | | - David von Stetten
- European Molecular Biology Laboratory, Hamburg Unit, Hamburg, Germany
| | | | | | | | | | | | - Arwen R Pearson
- Institute for Nanostructure and Solid-State Physics, Universität Hamburg, Hamburg, Germany
| | - Tilman Kottke
- Department of Chemistry and Medical School OWL, Bielefeld University, Bielefeld, Germany
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2
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Bortel G, Tegze M, Sikorski M, Bean R, Bielecki J, Kim C, Koliyadu JCP, Koua FHM, Ramilli M, Round A, Sato T, Zabelskii D, Faigel G. 3D atomic structure from a single X-ray free electron laser pulse. Nat Commun 2024; 15:970. [PMID: 38302477 PMCID: PMC10834439 DOI: 10.1038/s41467-024-45229-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 01/16/2024] [Indexed: 02/03/2024] Open
Abstract
X-ray Free Electron Lasers (XFEL) are cutting-edge pulsed x-ray sources, whose extraordinary pulse parameters promise to unlock unique applications. Several new methods have been developed at XFELs; however, no methods are known, which allow ab initio atomic level structure determination using only a single XFEL pulse. Here, we present experimental results, demonstrating the determination of the 3D atomic structure from data obtained during a single 25 fs XFEL pulse. Parallel measurement of hundreds of Bragg reflections was done by collecting Kossel line patterns of GaAs and GaP. To the best of our knowledge with these measurements, we reached the ultimate temporal limit of the x-ray structure solution possible today. These measurements open the way for obtaining crystalline structures during non-repeatable fast processes, such as structural transformations. For example, the atomic structure of matter at extremely non-ambient conditions or transient structures formed in irreversible physical, chemical, or biological processes may be captured in a single shot measurement during the transformation. It would also facilitate time resolved pump-probe structural studies making them significantly shorter than traditional serial crystallography.
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Affiliation(s)
- Gábor Bortel
- Wigner Research Centre for Physics, Institute for Solid State Physics and Optics, P.O.B. 49, 1525, Budapest, Hungary.
| | - Miklós Tegze
- Wigner Research Centre for Physics, Institute for Solid State Physics and Optics, P.O.B. 49, 1525, Budapest, Hungary
| | - Marcin Sikorski
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
| | - Richard Bean
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
| | - Johan Bielecki
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
| | - Chan Kim
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
| | | | - Faisal H M Koua
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
| | - Marco Ramilli
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
| | - Adam Round
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
| | - Tokushi Sato
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
| | | | - Gyula Faigel
- Wigner Research Centre for Physics, Institute for Solid State Physics and Optics, P.O.B. 49, 1525, Budapest, Hungary.
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3
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Soyama H, Liang X, Yashiro W, Kajiwara K, Asimakopoulou EM, Bellucci V, Birnsteinova S, Giovanetti G, Kim C, Kirkwood HJ, Koliyadu JCP, Letrun R, Zhang Y, Uličný J, Bean R, Mancuso AP, Villanueva-Perez P, Sato T, Vagovič P, Eakins D, Korsunsky AM. Revealing the origins of vortex cavitation in a Venturi tube by high speed X-ray imaging. Ultrason Sonochem 2023; 101:106715. [PMID: 38061251 PMCID: PMC10750113 DOI: 10.1016/j.ultsonch.2023.106715] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/18/2023] [Accepted: 12/01/2023] [Indexed: 12/22/2023]
Abstract
Hydrodynamic cavitation is useful in many processing applications, for example, in chemical reactors, water treatment and biochemical engineering. An important type of hydrodynamic cavitation that occurs in a Venturi tube is vortex cavitation known to cause luminescence whose intensity is closely related to the size and number of cavitation events. However, the mechanistic origins of bubbles constituting vortex cavitation remains unclear, although it has been concluded that the pressure fields generated by the cavitation collapse strongly depends on the bubble geometry. The common view is that vortex cavitation consists of numerous small spherical bubbles. In the present paper, aspects of vortex cavitation arising in a Venturi tube were visualized using high-speed X-ray imaging at SPring-8 and European XFEL. It was discovered that vortex cavitation in a Venturi tube consisted of angulated rather than spherical bubbles. The tangential velocity of the surface of vortex cavitation was assessed considering the Rankine vortex model.
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Affiliation(s)
- Hitoshi Soyama
- Department of Finemechanics, Tohoku University, 6-6-01 Aramaki, Aoba-ku, Sendai 980-8579, Japan.
| | - Xiaoyu Liang
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Wataru Yashiro
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, Miyagi 980-8577, Japan; International Center for Synchrotron Radiation Innovation Smart (SRIS), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, Miyagi 980-8577, Japan; Department of Applied Physics, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kentaro Kajiwara
- Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan
| | | | | | | | | | - Chan Kim
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | | | | | - Romain Letrun
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Yuhe Zhang
- Synchrotron Radiation Research and NanoLund, Lund University, Box 118, Lund, 221 00, Sweden
| | - Jozef Uličný
- Faculty of Science, Department of Biophysics, P. J. Šafárik University, Jesenná 5, 04154 Košice, Slovakia
| | - Richard Bean
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Adrian P Mancuso
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Diamond House, Didcot, OX11 0DE, UK; Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Pablo Villanueva-Perez
- Synchrotron Radiation Research and NanoLund, Lund University, Box 118, Lund, 221 00, Sweden
| | - Tokushi Sato
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Patrik Vagovič
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany; Center for Free-Electron Laser (CFEL), DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Daniel Eakins
- Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, UK
| | - Alexander M Korsunsky
- Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, UK
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4
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Birnsteinova S, Ferreira de Lima DE, Sobolev E, Kirkwood HJ, Bellucci V, Bean RJ, Kim C, Koliyadu JCP, Sato T, Dall’Antonia F, Asimakopoulou EM, Yao Z, Buakor K, Zhang Y, Meents A, Chapman HN, Mancuso AP, Villanueva-Perez P, Vagovič P. Online dynamic flat-field correction for MHz microscopy data at European XFEL. J Synchrotron Radiat 2023; 30:1030-1037. [PMID: 37729072 PMCID: PMC10624028 DOI: 10.1107/s1600577523007336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 08/21/2023] [Indexed: 09/22/2023]
Abstract
The high pulse intensity and repetition rate of the European X-ray Free-Electron Laser (EuXFEL) provide superior temporal resolution compared with other X-ray sources. In combination with MHz X-ray microscopy techniques, it offers a unique opportunity to achieve superior contrast and spatial resolution in applications demanding high temporal resolution. In both live visualization and offline data analysis for microscopy experiments, baseline normalization is essential for further processing steps such as phase retrieval and modal decomposition. In addition, access to normalized projections during data acquisition can play an important role in decision-making and improve the quality of the data. However, the stochastic nature of X-ray free-electron laser sources hinders the use of standard flat-field normalization methods during MHz X-ray microscopy experiments. Here, an online (i.e. near real-time) dynamic flat-field correction method based on principal component analysis of dynamically evolving flat-field images is presented. The method is used for the normalization of individual X-ray projections and has been implemented as a near real-time analysis tool at the Single Particles, Clusters, and Biomolecules and Serial Femtosecond Crystallography (SPB/SFX) instrument of EuXFEL.
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Affiliation(s)
| | | | | | | | | | | | - Chan Kim
- European XFEL GmbH, Schenefeld, Germany
| | | | | | | | | | - Zisheng Yao
- Synchrotron Radiation Research and NanoLund, Lund University, Lund, Sweden
| | - Khachiwan Buakor
- European XFEL GmbH, Schenefeld, Germany
- Synchrotron Radiation Research and NanoLund, Lund University, Lund, Sweden
| | - Yuhe Zhang
- Synchrotron Radiation Research and NanoLund, Lund University, Lund, Sweden
| | - Alke Meents
- Center for Free-Electron Laser Science (CFEL), DESY, Hamburg, Germany
| | - Henry N. Chapman
- Center for Free-Electron Laser Science (CFEL), DESY, Hamburg, Germany
- University of Hamburg, Hamburg, Germany
| | - Adrian P. Mancuso
- European XFEL GmbH, Schenefeld, Germany
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
| | | | - Patrik Vagovič
- European XFEL GmbH, Schenefeld, Germany
- Center for Free-Electron Laser Science (CFEL), DESY, Hamburg, Germany
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5
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Konold PE, You T, Bielecki J, Valerio J, Kloos M, Westphal D, Bellisario A, Varma Yenupuri T, Wollter A, Koliyadu JCP, Koua FH, Letrun R, Round A, Sato T, Mészáros P, Monrroy L, Mutisya J, Bódizs S, Larkiala T, Nimmrich A, Alvarez R, Adams P, Bean R, Ekeberg T, Kirian RA, Martin AV, Westenhoff S, Maia FRNC. 3D-printed sheet jet for stable megahertz liquid sample delivery at X-ray free-electron lasers. IUCrJ 2023; 10:662-670. [PMID: 37721770 PMCID: PMC10619454 DOI: 10.1107/s2052252523007972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 09/12/2023] [Indexed: 09/19/2023]
Abstract
X-ray free-electron lasers (XFELs) can probe chemical and biological reactions as they unfold with unprecedented spatial and temporal resolution. A principal challenge in this pursuit involves the delivery of samples to the X-ray interaction point in such a way that produces data of the highest possible quality and with maximal efficiency. This is hampered by intrinsic constraints posed by the light source and operation within a beamline environment. For liquid samples, the solution typically involves some form of high-speed liquid jet, capable of keeping up with the rate of X-ray pulses. However, conventional jets are not ideal because of radiation-induced explosions of the jet, as well as their cylindrical geometry combined with the X-ray pointing instability of many beamlines which causes the interaction volume to differ for every pulse. This complicates data analysis and contributes to measurement errors. An alternative geometry is a liquid sheet jet which, with its constant thickness over large areas, eliminates the problems related to X-ray pointing. Since liquid sheets can be made very thin, the radiation-induced explosion is reduced, boosting their stability. These are especially attractive for experiments which benefit from small interaction volumes such as fluctuation X-ray scattering and several types of spectroscopy. Although their use has increased for soft X-ray applications in recent years, there has not yet been wide-scale adoption at XFELs. Here, gas-accelerated liquid sheet jet sample injection is demonstrated at the European XFEL SPB/SFX nano focus beamline. Its performance relative to a conventional liquid jet is evaluated and superior performance across several key factors has been found. This includes a thickness profile ranging from hundreds of nanometres to 60 nm, a fourfold increase in background stability and favorable radiation-induced explosion dynamics at high repetition rates up to 1.13 MHz. Its minute thickness also suggests that ultrafast single-particle solution scattering is a possibility.
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Affiliation(s)
- Patrick E. Konold
- Laboratory of Molecular Biophysics, Institute for Cell and Molecular Biology, Uppsala University, Box 596, 75124 Uppsala, Sweden
| | - Tong You
- Laboratory of Molecular Biophysics, Institute for Cell and Molecular Biology, Uppsala University, Box 596, 75124 Uppsala, Sweden
| | | | - Joana Valerio
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Marco Kloos
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Daniel Westphal
- Laboratory of Molecular Biophysics, Institute for Cell and Molecular Biology, Uppsala University, Box 596, 75124 Uppsala, Sweden
| | - Alfredo Bellisario
- Laboratory of Molecular Biophysics, Institute for Cell and Molecular Biology, Uppsala University, Box 596, 75124 Uppsala, Sweden
| | - Tej Varma Yenupuri
- Laboratory of Molecular Biophysics, Institute for Cell and Molecular Biology, Uppsala University, Box 596, 75124 Uppsala, Sweden
| | - August Wollter
- Laboratory of Molecular Biophysics, Institute for Cell and Molecular Biology, Uppsala University, Box 596, 75124 Uppsala, Sweden
| | | | | | - Romain Letrun
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Adam Round
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Tokushi Sato
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Petra Mészáros
- Department of Chemistry – BMC, Uppsala University, Box 576, 75123 Uppsala, Sweden
| | - Leonardo Monrroy
- Department of Chemistry – BMC, Uppsala University, Box 576, 75123 Uppsala, Sweden
| | - Jennifer Mutisya
- Department of Chemistry – BMC, Uppsala University, Box 576, 75123 Uppsala, Sweden
| | - Szabolcs Bódizs
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Taru Larkiala
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Amke Nimmrich
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
- Department of Chemistry, University of Washington, Bagley Hall, Seattle, WA 98195, USA
| | - Roberto Alvarez
- Department of Physics, Arizona State University, 550 E. Tyler Drive, Tempe, AZ 85287, USA
| | - Patrick Adams
- School of Science, STEM College, RMIT University, Melbourne, Victoria 3000, Australia
| | - Richard Bean
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Tomas Ekeberg
- Laboratory of Molecular Biophysics, Institute for Cell and Molecular Biology, Uppsala University, Box 596, 75124 Uppsala, Sweden
| | - Richard A. Kirian
- Department of Physics, Arizona State University, 550 E. Tyler Drive, Tempe, AZ 85287, USA
| | - Andrew V. Martin
- School of Science, STEM College, RMIT University, Melbourne, Victoria 3000, Australia
| | - Sebastian Westenhoff
- Department of Chemistry – BMC, Uppsala University, Box 576, 75123 Uppsala, Sweden
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Filipe R. N. C. Maia
- Laboratory of Molecular Biophysics, Institute for Cell and Molecular Biology, Uppsala University, Box 596, 75124 Uppsala, Sweden
- Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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6
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Koliyadu JCP, Letrun R, Kirkwood HJ, Liu J, Jiang M, Emons M, Bean R, Bellucci V, Bielecki J, Birnsteinova S, de Wijn R, Dietze T, E J, Grünert J, Kane D, Kim C, Kim Y, Lederer M, Manning B, Mills G, Morillo LL, Reimers N, Rompotis D, Round A, Sikorski M, Takem CMS, Vagovič P, Venkatesan S, Wang J, Wegner U, Mancuso AP, Sato T. Pump-probe capabilities at the SPB/SFX instrument of the European XFEL. J Synchrotron Radiat 2022; 29:1273-1283. [PMID: 36073887 PMCID: PMC9455201 DOI: 10.1107/s1600577522006701] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 06/29/2022] [Indexed: 06/15/2023]
Abstract
Pump-probe experiments at X-ray free-electron laser (XFEL) facilities are a powerful tool for studying dynamics at ultrafast and longer timescales. Observing the dynamics in diverse scientific cases requires optical laser systems with a wide range of wavelength, flexible pulse sequences and different pulse durations, especially in the pump source. Here, the pump-probe instrumentation available for measurements at the Single Particles, Clusters, and Biomolecules and Serial Femtosecond Crystallography (SPB/SFX) instrument of the European XFEL is reported. The temporal and spatial stability of this instrumentation is also presented.
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Affiliation(s)
| | - Romain Letrun
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | | | - Jia Liu
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Man Jiang
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Moritz Emons
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Richard Bean
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | | | | | | | | | - Thomas Dietze
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Juncheng E
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Jan Grünert
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Daniel Kane
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Chan Kim
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Yoonhee Kim
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Max Lederer
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | | | - Grant Mills
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | | | - Nadja Reimers
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | | | - Adam Round
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
- School of Chemical and Physical Sciences, Keele University, Staffordshire ST5 5AZ, United Kingdom
| | | | | | - Patrik Vagovič
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
- Center for Free Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestraße 85, 22607 Hamburg, Germany
| | | | - Jinxiong Wang
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Ulrike Wegner
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Adrian P. Mancuso
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Tokushi Sato
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
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7
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Li L, Koliyadu JCP, Donnelly H, Alj D, Delmas O, Ruiz-Lopez M, de La Rochefoucauld O, Dovillaire G, Fajardo M, Zhou C, Ruan S, Dromey B, Zepf M, Zeitoun P. High numerical aperture Hartmann wave front sensor for extreme ultraviolet spectral range. Opt Lett 2020; 45:4248-4251. [PMID: 32735269 DOI: 10.1364/ol.396356] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 06/25/2020] [Indexed: 06/11/2023]
Abstract
We present a novel, to the best of our knowledge, Hartmann wave front sensor for extreme ultraviolet (EUV) spectral range with a numerical aperture (NA) of 0.15. The sensor has been calibrated using an EUV radiation source based on gas high harmonic generation. The calibration, together with simulation results, shows an accuracy beyond λ/39 root mean square (rms) at λ=32nm. The sensor is suitable for wave front measurement in the 10 nm to 45 nm spectral regime. This compact wave front sensor is high-vacuum compatible and designed for in situ operations, allowing wide applications for up-to-date EUV sources or high-NA EUV optics.
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8
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Wodzinski T, Künzel S, Koliyadu JCP, Hussain M, Keitel B, Williams GO, Zeitoun P, Plönjes E, Fajardo M. High-harmonic generation wave front dependence on a driving infrared wave front. Appl Opt 2020; 59:1363-1370. [PMID: 32225398 DOI: 10.1364/ao.59.001363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 11/21/2019] [Indexed: 06/10/2023]
Abstract
With high-harmonic generation (HHG), spatially and temporally coherent XUV to soft x-ray (100 nm to 10 nm) table-top sources can be realized by focusing a driving infrared (IR) laser on a gas target. For applications such as coherent diffraction imaging, holography, plasma diagnostics, or pump-probe experiments, it is desirable to have control over the wave front (WF) of the HHs to maximize the number of XUV photons on target or to tailor the WF. Here, we demonstrate control of the XUV WF by tailoring the driving IR WF with a deformable mirror. The WFs of both IR and XUV beams are monitored with WF sensors. We present a systematic study of the dependence of the aberrations of the HHs on the aberrations of the driving IR laser and explain the observations with propagation simulations. We show that we can control the astigmatism of the HHs by changing the astigmatism of the driving IR laser without compromising the HH generation efficiency with a WF quality from λ/8 to λ/13.3. This allows us to shape the XUV beam without changing any XUV optical element.
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