Laser duration and intensity limits in plasma backward Raman amplifiers

被引：20

作者：

Malkin, V. M. ^{[1
]}

Toroker, Z. ^{[2
]}

Fisch, N. J. ^{[1
,2
]}

机构：

[1] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08540 USA

[2] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

来源：

PHYSICS OF PLASMAS | 2012年 / 19卷 / 02期

关键词：

PULSE-PROPAGATION; AMPLIFICATION; COMPRESSION; SCATTERING;

D O I：

10.1063/1.3683558

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 shortest duration and the largest non-focused intensity of laser pulses produced by means of backward Raman amplification (BRA) in plasmas are calculated. These limits occur in moderately undercritical plasmas and are imposed by combined effects of moderately small group velocity dispersion and relativistic electron nonlinearity of the amplified pulses. The efficient BRA range covered by this theory is broader than one known previously. This can be useful for BRA of x-ray pulses in regular or compressed solids and ultra-powerful optical pulses in the lowest density solids. (C) 2012 American Institute of Physics. [doi :10.1063/1.3683558]

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