Frequency mixing of high intensity laser light with stimulated Raman backscattered radiation in underdense plasmas

被引：3
|
作者：
Krushelnick, K [1 ]
Moore, CI
Ting, A
Burris, HR
机构：
[1] Cornell Univ, Plasma Studies Lab, Ithaca, NY 14853 USA
[2] Omega P Inc, New Haven, CT 06520 USA
[3] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA
来源：
PHYSICAL REVIEW E | 1998年 / 58卷 / 03期
关键词：
D O I：
10.1103/PhysRevE.58.4030
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：
Sidescattered radiation from the interaction of an ultraintense laser pulse (P>2 TW) with underdense helium plasmas (n(e)approximate to 10(19) cm(-3)) is measured and emission at 90 degrees from the axis of laser propagation is observed to be broadened significantly near the second harmonic (Delta lambda=30-40 nm). This result is consistent with sum frequency mixing of forward propagating laser light and the broadened backscattered stimulated Raman scattered radiation that occurs within transient filamentary structures produced by the ponderomotive force of the focused laser pulse.
引用
收藏
页码：4030 / 4032
页数：3
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