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Issue 5, 2020
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Attosecond transient absorption spooktroscopy: a ghost imaging approach to ultrafast absorption spectroscopy

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Abstract

The recent demonstration of isolated attosecond pulses from an X-ray free-electron laser (XFEL) opens the possibility for probing ultrafast electron dynamics at X-ray wavelengths. An established experimental method for probing ultrafast dynamics is X-ray transient absorption spectroscopy, where the X-ray absorption spectrum is measured by scanning the central photon energy and recording the resultant photoproducts. The spectral bandwidth inherent to attosecond pulses is wide compared to the resonant features typically probed, which generally precludes the application of this technique in the attosecond regime. In this paper we propose and demonstrate a new technique to conduct transient absorption spectroscopy with broad bandwidth attosecond pulses with the aid of ghost imaging, recovering sub-bandwidth resolution in photoproduct-based absorption measurements.

Graphical abstract: Attosecond transient absorption spooktroscopy: a ghost imaging approach to ultrafast absorption spectroscopy

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Article information


Submitted
16 Jul 2019
Accepted
21 Nov 2019
First published
26 Nov 2019

This article is Open Access

Phys. Chem. Chem. Phys., 2020,22, 2704-2712
Article type
Paper

Attosecond transient absorption spooktroscopy: a ghost imaging approach to ultrafast absorption spectroscopy

T. Driver, S. Li, E. G. Champenois, J. Duris, D. Ratner, T. J. Lane, P. Rosenberger, A. Al-Haddad, V. Averbukh, T. Barnard, N. Berrah, C. Bostedt, P. H. Bucksbaum, R. Coffee, L. F. DiMauro, L. Fang, D. Garratt, A. Gatton, Z. Guo, G. Hartmann, D. Haxton, W. Helml, Z. Huang, A. LaForge, A. Kamalov, M. F. Kling, J. Knurr, M. Lin, A. A. Lutman, J. P. MacArthur, J. P. Marangos, M. Nantel, A. Natan, R. Obaid, J. T. O'Neal, N. H. Shivaram, A. Schori, P. Walter, A. Li Wang, T. J. A. Wolf, A. Marinelli and J. P. Cryan, Phys. Chem. Chem. Phys., 2020, 22, 2704
DOI: 10.1039/C9CP03951A

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