Attosecond evolution of energy- and angle-resolved photoemission spectra in two-color (XUV + IR) ionization of rare gases - Laboratoire de Chimie Physique-Matière et Rayonnement Accéder directement au contenu
Article Dans Une Revue Physical Review A : Atomic, molecular, and optical physics [1990-2015] Année : 2014

Attosecond evolution of energy- and angle-resolved photoemission spectra in two-color (XUV + IR) ionization of rare gases

Résumé

We have analyzed the angular distributions of the photoelectrons emitted upon photoionization of rare gases by a comb of harmonics in the extreme ultraviolet range, in the presence of a “dressing” infrared (IR) field with controlled delay ?, stabilized down to about ±60 as. The measurements have been performed with the help of the coincidence momentum imaging technique. We evidence marked differences in the measured angular distributions of the photoelectrons, depending on the number of IR photons exchanged. Joined to a theoretical interpretation, these observations bring new insights into the dynamics of this class of two-color photoionization processes that are a key step towards studying photoionization in the time domain, with attosecond time resolution.
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hal-01296946 , version 1 (01-04-2016)

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Y. J. Picard, B. Manschwetus, M. Géléoc, M. Böttcher, E. M. Staicu Casagrande, et al.. Attosecond evolution of energy- and angle-resolved photoemission spectra in two-color (XUV + IR) ionization of rare gases. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2014, 89, pp.031401. ⟨10.1103/PhysRevA.89.031401⟩. ⟨hal-01296946⟩
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