Influence of optical and interaction-induced dephasing effects on the short-pulse ionization of atomic gases

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8 Scopus citations

Abstract

The ionization dynamics of dilute atomic gases induced by ultra-short high-intensity optical-pulse excitation is treated fully microscopically. The optical excitation is self-consistently coupled to the many-body interactions of the electrons, including their interactions with free electrons, ions, and neutral atoms. The theory is numerically evaluated for the example of a gas of hydrogen atoms for a broad range of pulses covering the tunnel ionization, multi-photon ionization, as well as the one-photon ionization regimes. It is shown that the many-body effects during the excitation distinctly influence the atomic ionization dynamics. The ionization degree after the pulse is dominated by the dephasing caused by the excitation-dependent interplay between the purely optical processes and the many-body interactions.

Original languageEnglish (US)
Pages (from-to)1442-1449
Number of pages8
JournalJournal of the Optical Society of America B: Optical Physics
Volume32
Issue number7
DOIs
StatePublished - 2015

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Statistical and Nonlinear Physics

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