Simulations of 10 μm filaments in a realistically modeled atmosphere

Paris Panagiotopoulos, Kolja Schuh, Miroslav Kolesik, Jerome V Moloney

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

We numerically study the formation and propagation dynamics of 10 μm filaments in the atmosphere. We investigate filament formation of multi-Joule 100 fs and 1 ps duration pulses over propagation lengths of 100 m and find that the carrier self-steepening regularization mechanism predicted for 4 μm wavelengths still holds. In our study we include multiple physical effects ignored in the past, such as rotational Raman and avalanche ionization. In addition we incorporate in our simulations the most detailed dispersive model available for atmospheric air, which includes multiple species, such as O2, N2, Ar, CO2, CO, and CH4, for a variety of humidity levels. Results presented here are expected to have a significant impact in the wider field of nonlinear optics where the use of mid-infrared lasers is rapidly growing.

Original languageEnglish (US)
Pages (from-to)2154-2161
Number of pages8
JournalJournal of the Optical Society of America B: Optical Physics
Volume33
Issue number10
DOIs
StatePublished - Oct 1 2016

ASJC Scopus subject areas

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

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