Filamentation of ultrashort laser pulses propagating in tenuous plasmas

被引：26
作者：
Andreev, N. E.
Gorbunov, L. M.
Mora, P.
Ramazashvili, R. R.
机构：
[1] Russian Acad Sci, Associated Inst High Temp, Inst High Energy Dens, Moscow 125412, Russia
[2] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
来源：
PHYSICS OF PLASMAS | 2007年 / 14卷 / 08期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1063/1.2768030
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：
The filamentation of ultrashort laser pulses (shorter than a plasma period) propagating in tenuous plasmas is studied. In this regime relativistic and ponderomotive nonlinearities tend to cancel each other. Time-dependent residual nonlinear plasma response brings about the dynamical filamentation with the maximum unstable transverse wave number decreasing in the course of laser pulse propagation. Dynamics of a hot spot that seeds the filamentation instability is studied numerically and reveals a good agreement with the analytical results. (C) 2007 American Institute of Physics.
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页数：9
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