掺杂材料对激光等离子体受激布里渊散射的影响  

The Different Material Effect on Stimulated Brillouin Scatteringin Laser-Plasma

作　　者：蒋小华[1] 丁永坤[1] 赵雪薇[1] 刘永刚 郑志坚[1] 郑坚[2] 

机构地区：[1]中国工程物理研究院核物理与化学研究所 [2]中国科学技术大学近代物理系

出　　处：《光学学报》1998年第8期1006-1009,共4页Acta Optica Sinica

基　　金：国家科委863高科技项目

摘　　要：研究了激光等离子体背向受激布里渊散射光谱及反射率。当小能量短脉冲激光入射平面靶时，激光等离子体发展不充分，受激布里渊散射光谱结构相似，受激布里渊散射的增长主要受等离于体尺度的影响，随靶材料的有效原子序数的增加，等离子体尺度变小，受激布里渊散射反射率减少。The spectra and reflectivity of stimulated Brillouin scattering was reported in laserplasma. When the different material targets were irradiated by laser with low energy and short pulse, the spectra of SBS were the same. The reflectivity of SBS energy was mainly affected by the size of plasma. The reflectivity of SBS will decrease when high Z material targets were irradiated.

关 键 词：激光等离子体 受激布里渊散射 朗道阻尼 对流增长 

分 类 号：O437.2[机械工程—光学工程] TL612[理学—光学]