摘要
报道了基于神光Ⅱ激光装置的全口径背向散射测量系统。系统通过激光聚焦透镜收集激光等离子体相互作用产生的散射光;两个热能量卡计分别测量波长348～354 nm范围的受激布里渊散射和波长400～700 nm范围的受激拉曼散射产生的散射光。该系统可以测量散射光的能量、功率和光谱图像,提供优于0.5 nm光谱分辨和10 ps时间分辨的光谱物理信息。同时采用PIN二极管阵列对聚焦透镜外侧附近的近背向散射光信息进行测量。
Full-aperture backscatter station（FABS） installed on Shenguang-ⅡLaser Facility is reported.This diagnostic is a spatially averaged mix of light from all of the laser-plasma interactions in the field of view collected by the laser beam focusing lens.Lights in two different wavelength ranges（348～354 nm and 400～700 nm） corresponding to stimulated Brillouin and stimulated Raman backscattering are measured by two calorimeters.The energy,power,and spectrum of backscattered light can be given respectively.The time-resolved spectra will be determined with a goal of SRS temporal response with 10 ps resolution and dimensional response with 0.5 nm resolution.Near backscattered light outside focusing lens is diagnosed based on an array of PIN diodes.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2010年第8期1896-1900,共5页
High Power Laser and Particle Beams
基金
国家高技术发展计划项目
关键词
全口径背向散射
激光等离子体
受激布里渊散射
受激拉曼散射
full-aperture backscatter station
laser-produced plasma
stimulated Brillouin backscattering
stimulated Raman backscattering
