Ionization-free filamentation in gases: soliton regime

Lyubomir M. Kovachev; Kamen L. Kovachev

doi:10.1117/12.879211

15 November 2010 Ionization-free filamentation in gases: soliton regime

Lyubomir M. Kovachev, Kamen L. Kovachev

Proceedings Volume 7751, XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; 775128 (2010) https://doi.org/10.1117/12.879211
Event: 18th International Symposium on Gas Flow and Chemical Lasers and High Power Lasers, 2010, Sofia, Bulgaria

Abstract

Up to now the long range filaments are considered as a balance between Kerr focusing and defocusing by plasma generation in the nonlinear focus. However, the above explanation of filamentation in far-away zone finds considerable difficulties. There are basically two main characteristic which remain the same at these distances - the super broad spectrum and the width of the core, while the power in a stable filament drops to the critical value for self-focusing. With such power the plasma and higher-order Kerr terms are too small to prevent selffocusing. We suggest here a new mechanism for stable soliton pulse propagation in far-away zone, where the power of the laser pulse is a little above critical, and the pulse admits super-broad spectra.

Citation Download Citation

Lyubomir M. Kovachev and Kamen L. Kovachev "Ionization-free filamentation in gases: soliton regime", Proc. SPIE 7751, XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 775128 (15 November 2010); https://doi.org/10.1117/12.879211

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