Dichography: Two-frame Ultrafast Imaging from a Single Diffraction Pattern
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| author | Hecht, Linos Haddad, Andre Al Bastian, Björn Baumann, Thomas M. Bielecki, Johan Bostedt, Christoph De, Subhendu De Fanis, Alberto Dold, Simon Fennel, Thomas Goy, Fanny Graf, Christina Hartmann, Robert Jakobs, Georg Joschko, Maximilian Knopp, Gregor Kolatzki, Katharina Krishnan, Sivarama Kruse, Björn Lægdsmand, Asbjørn Ø. Langbehn, Bruno Mandal, Suddhasattwa Mazza, Tommaso Meyer, Michael Peltz, Christian Pfeifer, Thomas Rafie-Zinedine, Safi Sarracini, Antoine Sauppe, Mario Schenk, Florian Schnorr, Kirsten Senfftleben, Björn Sishodia, Keshav Stienkemeier, Frank Sun, Zhibin Tanyag, Rico Mayro P. Tümmler, Paul Usenko, Sergey Ussling, Carl Frederic Wood, Vanessa Xie, Xinhua Yarema, Maksym Yarema, Olesya Yazdani, Nuri Zhang, Hankai von Issendorff, Bernd Ovcharenko, Yevheniy Mudrich, Marcel Rupp, Daniela Colombo, Alessandro |
| author_facet | Hecht, Linos Haddad, Andre Al Bastian, Björn Baumann, Thomas M. Bielecki, Johan Bostedt, Christoph De, Subhendu De Fanis, Alberto Dold, Simon Fennel, Thomas Goy, Fanny Graf, Christina Hartmann, Robert Jakobs, Georg Joschko, Maximilian Knopp, Gregor Kolatzki, Katharina Krishnan, Sivarama Kruse, Björn Lægdsmand, Asbjørn Ø. Langbehn, Bruno Mandal, Suddhasattwa Mazza, Tommaso Meyer, Michael Peltz, Christian Pfeifer, Thomas Rafie-Zinedine, Safi Sarracini, Antoine Sauppe, Mario Schenk, Florian Schnorr, Kirsten Senfftleben, Björn Sishodia, Keshav Stienkemeier, Frank Sun, Zhibin Tanyag, Rico Mayro P. Tümmler, Paul Usenko, Sergey Ussling, Carl Frederic Wood, Vanessa Xie, Xinhua Yarema, Maksym Yarema, Olesya Yazdani, Nuri Zhang, Hankai von Issendorff, Bernd Ovcharenko, Yevheniy Mudrich, Marcel Rupp, Daniela Colombo, Alessandro |
| contents | We experimentally demonstrate that pairs of time-delayed ultrabright and ultrashort X-ray pulses of two different colors, delivered by modern X-ray Free Electron Lasers, can provide two time-delayed snapshots of a sample. We introduce Dichography, a method that algorithmically separates the diffraction signals overlapping on the detector and independently retrieves the two images of the specimen. We employ Dichography to reconstruct two views of individual xenon-doped helium nanodroplets with 20 nm spatial resolution. The consistency of structures observed in both images at delays up to 750 fs provides evidence that, under these illumination conditions, significant structural damage only occurs at longer timescales. We further validate the method by imaging pairs of silver nanoparticles intercepted by the same light pulse. Dichography enables a new class of experiments across physics, chemistry, and materials science, making a significant step toward the original promise of X-ray free-electron lasers to capture ultrafast movies of nanomatter. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_20153 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Dichography: Two-frame Ultrafast Imaging from a Single Diffraction Pattern Hecht, Linos Haddad, Andre Al Bastian, Björn Baumann, Thomas M. Bielecki, Johan Bostedt, Christoph De, Subhendu De Fanis, Alberto Dold, Simon Fennel, Thomas Goy, Fanny Graf, Christina Hartmann, Robert Jakobs, Georg Joschko, Maximilian Knopp, Gregor Kolatzki, Katharina Krishnan, Sivarama Kruse, Björn Lægdsmand, Asbjørn Ø. Langbehn, Bruno Mandal, Suddhasattwa Mazza, Tommaso Meyer, Michael Peltz, Christian Pfeifer, Thomas Rafie-Zinedine, Safi Sarracini, Antoine Sauppe, Mario Schenk, Florian Schnorr, Kirsten Senfftleben, Björn Sishodia, Keshav Stienkemeier, Frank Sun, Zhibin Tanyag, Rico Mayro P. Tümmler, Paul Usenko, Sergey Ussling, Carl Frederic Wood, Vanessa Xie, Xinhua Yarema, Maksym Yarema, Olesya Yazdani, Nuri Zhang, Hankai von Issendorff, Bernd Ovcharenko, Yevheniy Mudrich, Marcel Rupp, Daniela Colombo, Alessandro Optics Mesoscale and Nanoscale Physics Data Analysis, Statistics and Probability We experimentally demonstrate that pairs of time-delayed ultrabright and ultrashort X-ray pulses of two different colors, delivered by modern X-ray Free Electron Lasers, can provide two time-delayed snapshots of a sample. We introduce Dichography, a method that algorithmically separates the diffraction signals overlapping on the detector and independently retrieves the two images of the specimen. We employ Dichography to reconstruct two views of individual xenon-doped helium nanodroplets with 20 nm spatial resolution. The consistency of structures observed in both images at delays up to 750 fs provides evidence that, under these illumination conditions, significant structural damage only occurs at longer timescales. We further validate the method by imaging pairs of silver nanoparticles intercepted by the same light pulse. Dichography enables a new class of experiments across physics, chemistry, and materials science, making a significant step toward the original promise of X-ray free-electron lasers to capture ultrafast movies of nanomatter. |
| title | Dichography: Two-frame Ultrafast Imaging from a Single Diffraction Pattern |
| topic | Optics Mesoscale and Nanoscale Physics Data Analysis, Statistics and Probability |
| url | https://arxiv.org/abs/2508.20153 |