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

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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

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monatomic gases
ionization
pulses
interactions
self excitation
excitation
photons
neutral atoms
free electrons
atoms
tunnels
hydrogen atoms
coverings
gases
ions
electrons

ASJC Scopus subject areas

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

Cite this

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title = "Influence of optical and interaction-induced dephasing effects on the short-pulse ionization of atomic gases",
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.",
author = "K. Schuh and Jorg Hader and Moloney, {Jerome V} and Koch, {Stephan W}",
year = "2015",
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T1 - Influence of optical and interaction-induced dephasing effects on the short-pulse ionization of atomic gases

AU - Schuh, K.

AU - Hader, Jorg

AU - Moloney, Jerome V

AU - Koch, Stephan W

PY - 2015

Y1 - 2015

N2 - 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.

AB - 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.

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JO - Journal of the Optical Society of America B: Optical Physics

JF - Journal of the Optical Society of America B: Optical Physics

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