Self-probing spectroscopy of XUV photo-ionization dynamics in atoms subjected to a strong-field environment

Doron Azoury, Michael Krüger, Gal Orenstein, Henrik R. Larsson, Sebastian Bauch, Barry D. Bruner and Nirit Dudovich ()
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Doron Azoury: Weizmann Institute of Science
Michael Krüger: Weizmann Institute of Science
Gal Orenstein: Weizmann Institute of Science
Henrik R. Larsson: Christian-Albrechts-Universität zu Kiel
Sebastian Bauch: Christian-Albrechts-Universität zu Kiel
Barry D. Bruner: Weizmann Institute of Science
Nirit Dudovich: Weizmann Institute of Science

Nature Communications, 2017, vol. 8, issue 1, 1-9

Abstract: Abstract Single-photon ionization is one of the most fundamental light matter interactions in nature, serving as a universal probe of the quantum state of matter. By probing the emitted electron, one can decode the full dynamics of the interaction. When photo-ionization is evolving in the presence of a strong laser field, the fundamental properties of the mechanism can be signicantly altered. Here we demonstrate how the liberated electron can perform a self-probing measurement of such interaction with attosecond precision. Extreme ultraviolet attosecond pulses initiate an electron wavepacket by photo-ionization, a strong infrared field controls its motion, and finally electron–ion collision maps it into re-emission of attosecond radiation bursts. Our measurements resolve the internal clock provided by the self-probing mechanism, obtaining a direct insight into the build-up of photo-ionization in the presence of the strong laser field.

Date: 2017
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DOI: 10.1038/s41467-017-01723-w

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