摘要
在“星光Ⅱ”钕玻璃激光装置上，开展了脉宽约0.8ns、能量～70J 的351nm 激光在不同条件下辐照Au盘靶的实验，研究了激光光束质量对受激布里渊散射（SBS）谱的影响。SBS散射光谱测量结果表明，在激光束未匀滑条件下，SBS散射谱范围为352-360nm；在采用透镜列阵将激光束匀滑聚焦的条件下，激光等离子体密度变得更加均匀，SBS散射光谱范围变为351-351.5nm。实验数据为透镜列阵对光束的匀滑效果提供了直接支持。
Experiments about interaction of 351nm laser of the-0.8ns pulse duration and-70J energy with Au disk targets were conducted on“XingguangⅡ”neodymium glass laser facility under the different conditions. The influences of beam quality on stimulated Brillouin scattering （SBS） spectra were studied. When the laser beam was not smoothed, the SBS spectrum ranges from 352nm to 360nm. When the laser beam was smoothed by lens array, the SBS spectrum ranges from 351nm to 351.5nm because plasma density becomes uniform. Experimental data provides direct support for the smoothing effect of the lens array.
出处
《核聚变与等离子体物理》
CAS
CSCD
北大核心
2014年第2期107-110,共4页
Nuclear Fusion and Plasma Physics
基金
国家自然科学基金项目(11005097)
四川省非金属复合与功能材料重点实验室--省部共建国家重点实验室培育基地基金资助课题(12ZXFK12)
关键词
激光等离子体
散射光
盘靶
受激布里渊散射
Laser-produced plasma
Scattered light
Disk target
Stimulated Brillouin scattering
