Nonlinear optical polarization response and plasma generation in noble gases

Comparison of metastable-electronic-state-approach models to experiments

Anand Bahl, Jared K. Wahlstrand, Sina Zahedpour, Howard M. Milchberg, Miroslav Kolesik

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The nonlinear polarization response and plasma generation produced by intense optical pulses, modeled by the metastable-electronic-state approach, are verified against space-and-time resolved measurements with single-shot supercontinuum spectral interferometry. This first of a kind theory-experiment comparison is done in the intensity regime typical for optical filamentation, where self-focusing and plasma generation play competing roles. Excellent agreement between the theory and experiment shows that the self-focusing nonlinearity can be approximated by a single resonant state. Moreover, we demonstrate that inclusion of the post-adiabatic corrections, previously tested only in theoretic models, provides a viable description of the ionization rate in real gases.

Original languageEnglish (US)
Article number043867
JournalPhysical Review A
Volume96
Issue number4
DOIs
StatePublished - Oct 30 2017

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plasma generators
optical polarization
self focusing
rare gases
real gases
electronics
shot
interferometry
nonlinearity
time measurement
inclusions
ionization
polarization
pulses

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Nonlinear optical polarization response and plasma generation in noble gases : Comparison of metastable-electronic-state-approach models to experiments. / Bahl, Anand; Wahlstrand, Jared K.; Zahedpour, Sina; Milchberg, Howard M.; Kolesik, Miroslav.

In: Physical Review A, Vol. 96, No. 4, 043867, 30.10.2017.

Research output: Contribution to journalArticle

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