STRONG PLASMA-WAVE EXCITATION BY A CHIRPED LASER BEAT WAVE

被引:45
作者
DEUTSCH, M
MEERSON, B
GOLUB, JE
机构
[1] Racah Institute of Physics, Hebrew University of Jerusalem
来源
PHYSICS OF FLUIDS B-PLASMA PHYSICS | 1991年 / 3卷 / 07期
关键词
D O I
10.1063/1.859992
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
A modification of the plasma beat-wave excitation scheme is proposed, aimed at a significant increase of the resulting plasma wave amplitude. The modification employs two laser beams with a down-chirped beat frequency that follows, on the average, the amplitude-dependent frequency of the intense plasma wave. Numerical and analytical calculations that support the proposed scheme are presented. Also, new analytical solutions for the constant beat-frequency case are obtained. Finally, a plausible experimental setup is suggested, where one of two CO2 laser beams attains the necessary frequency chirp by passing through a diffraction grating pair.
引用
收藏
页码:1773 / 1780
页数:8
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