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Frontiers in Optics

Attosecond Imaging of Resonant Photoemission Dynamics

Alice Autuori, Dominique Platzer, Mariusz Lejman, Guillaume Gallician, Lucie Maëder, Antoine Covolo, Lea Bosse, Malay Dalui, David Bresteau, Jean-François Hergott, O. Tcherbakoff, Hugo J. B. Marroux, V. Loriot, F. Lépine, Lionel Poisson, Richard Taïeb, Jérémie Caillat, Pascal L. Salieres

Published Jan 1, 2021• 1 citation
Publisher

Abstract

Using momentum-resolved electron interferometry, we image helium two- photon ionization through intermediate bound states. This allows reconstructing in space and time the complete formation of the photoionized wavepacket.
DOI
10.1364/fio.2021.fth2b.1

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Photoionization is one of the most fundamental processes in light-matter interaction. Advanced attosecond photoelectron spectroscopy provides the possibility to characterize the ultrafast photoemission process in an extremely short attosecond time scale. Following scattering symmetry rules, residual ions encode ultrafast photoionization prints at the instant of electron removal forming an alternative electron emission chronoscope. Here, we experimentally illustrate the attosecond ion reconstruction of attosecond beating by interference of two-photon transition (RABBIT)-like interferometry through the development of high-resolution ion momentum detection in atomic photoionization processes. Our ion interferometry presents identical momentum- and time-dependent scattering phase shift, as we observed in photoelectron spectroscopy, and thus demonstrates that ion interferometry can be a possible alternative attosecond approach to resolve the photoionization process, without the electron homogeneity limitation.