Experimental Demonstration of Attosecond Pump-Probe Spectroscopy with an X-ray Free-Electron Laser

Zhaoheng Guo; Taran Driver; Sandra Beauvarlet; David Cesar; Joseph Duris; Paris L. Franz; Oliver Alexander; Dorian Bohler; Christoph Bostedt; Vitali Averbukh; Xinxin Cheng; Louis F. DiMauro; Gilles Doumy; Ruaridh Forbes; Oliver Gessner; James M. Glownia; Erik Isele; Andrei Kamalov; Kirk A. Larsen; Siqi Li; Xiang Li; Ming-Fu Lin; Gregory A. McCracken; Razib Obaid; Jordan T. ONeal; River R. Robles; Daniel Rolles; Marco Ruberti; Artem Rudenko; Daniel S. Slaughter; Nicholas S. Sudar; Emily Thierstein; Daniel Tuthill; Kiyoshi Ueda; Enliang Wang; Anna L. Wang; Jun Wang; Thorsten Weber; Thomas J. A. Wolf; Linda Young; Zhen Zhang; Philip H. Bucksbaum; Jon P. Marangos; Matthias F. Kling; Zhirong Huang; Peter Walter; Ludger Inhester; Nora Berrah; James P. Cryan; Agostino Marinelli

arXiv · 2401.15250

Experimental Demonstration of Attosecond Pump-Probe Spectroscopy with an X-ray Free-Electron Laser

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Abstract

Pump-probe experiments with sub-femtosecond resolution are the key to understanding electronic dynamics in quantum systems. Here we demonstrate the generation and control of sub-femtosecond pulse pairs from a two-colour X-ray free-electron laser (XFEL). By measuring the delay between the two pulses with an angular streaking diagnostic, we characterise the group velocity of the XFEL and demonstrate control of the pulse delay down to 270 as. We demonstrate the application of this technique to a pump-probe measurement in core-excited para-aminophenol. These results demonstrate the ability to perform pump-probe experiments with sub-femtosecond resolution and atomic site specificity.

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Zhaoheng Guo, Taran Driver, Sandra Beauvarlet, David Cesar, Joseph Duris, Paris L. Franz, Oliver Alexander, Dorian Bohler, Christoph Bostedt, Vitali Averbukh, Xinxin Cheng, Louis F. DiMauro, Gilles Doumy, Ruaridh Forbes, Oliver Gessner, James M. Glownia, Erik Isele, Andrei Kamalov, Kirk A. Larsen, Siqi Li, Xiang Li, Ming-Fu Lin, Gregory A. McCracken, Razib Obaid, Jordan T. ONeal, River R. Robles, Daniel Rolles, Marco Ruberti, Artem Rudenko, Daniel S. Slaughter, Nicholas S. Sudar, Emily Thierstein, Daniel Tuthill, Kiyoshi Ueda, Enliang Wang, Anna L. Wang, Jun Wang, Thorsten Weber, Thomas J. A. Wolf, Linda Young, Zhen Zhang, Philip H. Bucksbaum, Jon P. Marangos, Matthias F. Kling, Zhirong Huang, Peter Walter, Ludger Inhester, Nora Berrah, James P. Cryan, Agostino Marinelli. 2024-01-27. Experimental Demonstration of Attosecond Pump-Probe Spectroscopy with an X-ray Free-Electron Laser. https://arxiv.org/abs/2401.15250

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