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On self-focusing of laser beams in plasma

Published online by Cambridge University Press:  09 March 2009

A. M. Rubenchik  and
S. K. Turitsyn
A. M. Rubenchik
Affiliation:
Institute of Automation and Electrometry, Novosibirsk, USSR, 630090
S. K. Turitsyn
Affiliation:
Institute of Automation and Electrometry, Novosibirsk, USSR, 630090
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Abstract

Self-focusing of laser beams in plasma is studied analytically using the thermal (collision produced) and ponderomotive (nonlinear force produced) effects based on the model of Zakharov with solutions of the nonlinear Schrödinger equation. A basic difference appears if the electric field amplitude E is less than the threshold Eth (at which the electrodynamic energy density is equal to the gasdynamic pressure) from the contrary case, E > Eth.The length of the filamentation process is evaluated and results in large values for E below Eth.

Type
Research Article
Information
Laser and Particle Beams , Volume 5 , Issue 1 , February 1987 , pp. 3 - 14
Copyright
Copyright © Cambridge University Press 1987

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