Variational analysis of self-focusing of intense ultrashort pulses in gases -: art. no. 026605

被引：10

作者：

Arévalo, E ^{[1
]}

Becker, A ^{[1
]}

机构：

[1] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany

来源：

PHYSICAL REVIEW E | 2005年 / 72卷 / 02期

关键词：

D O I：

10.1103/PhysRevE.72.026605

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

By using perturbation theory we derive an expression for the electrical field of a Gaussian laser beam propagating in a gas medium. This expression is used as a trial solution in a variational method to get quasianalytical solutions for the width, intensity, and self-focusing distance. The approximation gives a better agreement with results of numerical simulations for a broad range of values of the input power than previous analytical results available in the literature. The results apply in the case of ultrashort pulses too.

引用

页数：8

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