Strong Laser Fields
Welcome to the Strong Laser Fields Group at the Department of Molecular and Optical Physics, University of Freiburg, Germany.

Dynamics of strong-field above threshold ionization of argon: Comparison between experiment and theory
Rolf Wiehle, Bernd Witzel, and Hanspeter Helm
Department of Molecular and Optical Physics, Albert-Ludwigs-Universität, Hermann-Herder-Strasse 3, D-79104  Freiburg, Germany
Eric Cormier
Centre Lasers Intenses et Applications, UMR 5107 du CNRS, Université Bordeaux I, 351 Cours de la Libération, F-33405 Talence, France


We record angle-resolved electron-momentum distributions from 800-nm short-pulse laser ionization of argon and compare our data with numerical solutions of the time-dependent Schrvdinger equation. A model potential of argon and the single active electron approximation are used. The calculation shows quantitative agreement in all dominant features of the experimental results. The energy and angular distributions of the photoelectrons, together with numerical simulations, allow us to identify the multiple processes involved during the interaction, such as channel switching, multiphoton resonant and nonresonant ionization, and ac Stark splitting.
©2003 The American Physical Society

©2003 Phys. Rev.,67, 063405 (2003)

PACS: 32.80.Rm, 32.90.+a, 32.80.Fb, 31.15.Ar

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