Control of 2ω (527 nm) stimulated Raman scattering in a steep density gradient plasma

被引:8
|
作者
Moody, J. D. [1 ]
Divol, L. [1 ]
Froula, D. H. [1 ]
Glenzer, S. H. [1 ]
Gregori, G. [1 ]
Kirkwood, R. K. [1 ]
Mackinnon, A. [1 ]
Meezan, N. [1 ]
Niemann, C. [1 ]
Suter, L. J. [1 ]
Bahr, R. [2 ]
Seka, W. [2 ]
机构
[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
[2] Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA
关键词
plasma density; plasma light propagation; plasma simulation; polarisation; Raman spectra; NATIONAL-IGNITION-FACILITY; INERTIAL CONFINEMENT FUSION; SCALE-LENGTH PLASMAS; INHOMOGENEOUS COLLISIONAL PLASMAS; EXPLODING FOIL PLASMAS; RANDOMIZED LASER-BEAM; BRILLOUIN-SCATTERING; PHASE PLATES; TARGETS; LIGHT;
D O I
10.1063/1.3143028
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
Experiments show that application of laser smoothing schemes including smoothing by spectral dispersion and polarization smoothing effectively suppresses stimulated Raman scattering from a 2 omega (527 nm) laser beam in a low average-gain plasma with a steep density gradient. Full-wave simulations reproduce the observed trends in the data and show that the scattering reduction is an indirect result of suppressing active filamentation.
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收藏
页数:6
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