Geometrical constraints on plasma couplers for Raman compression

被引：21

作者：

Toroker, Z. ^{[1
]}

Malkin, V. M. ^{[2
]}

Balakin, A. A. ^{[3
]}

Fraiman, G. M. ^{[3
]}

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

机构：

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

[2] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA

[3] Inst Appl Phys RAS, Nizhnii Novgorod 603950, Russia

来源：

PHYSICS OF PLASMAS | 2012年 / 19卷 / 08期

关键词：

LASER-PULSE AMPLIFICATION; PROPAGATION; GENERATION;

D O I：

10.1063/1.4745868

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：

Backward Raman compression in plasma is based on a 3-wave resonant interaction, which includes two counter-propagating laser pulses (pump and seed pulses) and an electron plasma wave (Langmuir wave). The resonant interaction can be ensured in nearly homogeneous plasmas. However, for high-power, large-aperture experiments, the homogeneous region becomes pancake-shaped and would likely be surrounded by thicker regions of inhomogeneous plasma. When these inhomogeneous plasma regions are extensive, significant inverse bremsstrahlung and seed dispersion may impede the compression effect. These deleterious effects may, however, be mitigated by chirping the seed and pump pulses. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4745868]

引用

页数：9

共 54 条

[1] Numerical modeling of quasitransient backward Raman amplification of laser pulses in moderately undercritical plasmas with multicharged ions [J].