Instability Growth And Filamentation of Very Intense Laser Beams in Self-Focusing Media

1 March 1990

journal article
Published by Oxford University Press (OUP) in Progress of Theoretical Physics

Vol. 83 (3) , 414-442
https://doi.org/10.1143/ptp.83.414

Abstract

Perturbational theoretical approach to describe the filament formation of very intense laser beams in self-focusing media is reviewed. Linearized approximation is employed to describe results using both Sinusoidal as well as Gaussian perturbation models. A phenomenological energy depletion criterion is introduced in order to explain some main features concerning filament formation. The sinusoidal perturbation model is further extended to take into account all the nonlinear terms neglected in linearizing the model in order to explain the experimentally observed diameter of the filaments.

Keywords

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