Characteristics of femtosecond laser pulses propagating in multiply ionized rare gases

Valer Toşa, Katalin Kovács, Daniel Ursescu, Katalin Varjú

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A three-dimensional non-adiabatic model in combination with a rate equation model is used to characterize high-intensity (>1016 W/cm2) femtosecond laser pulse propagation in atomic gas medium. In these conditions the atoms in the target gas will become multiply charged ions, while the laser pulse will propagate in a medium with high electron concentration created by itself. We obtain pulse characteristics in time, frequency and space domain for two representative cases: 800 nm and 267 nm (third harmonic) multi-cycle pulses which are both of practical importance. We show that the spatial-temporal variation of the refractive index in the macroscopic medium is the primary reason for pulse temporal/spectral and spatial shaping during propagation.

Original languageEnglish
Pages (from-to)271-275
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume408
DOIs
Publication statusPublished - Oct 1 2017

Keywords

  • High-intensity laser pulse
  • Highly ionized atomic medium
  • Propagation effects
  • Propagation equation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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