摘要
基于上海超强超短激光装置(SULF),选取各分系统关键节点进行波前测量,分析波前畸变的起源、演变及原因,并讨论了光学器件安装应力与钛宝石晶体质量对波前的影响。结果表明,激光波前畸变值随着大口径光学器件数量的增多而增大,光学镜片的面形加工误差、安装调试误差是影响钛宝石激光放大器中波前畸变的重要因素,对激光的聚焦性能有较大影响。对激光系统波前的测量有利于优化与控制整个系统的波前畸变,从而有助于提升光束质量和聚焦功率密度。
The key nodes of laser subsystems on the Shanghai Ultrafast Laser Facility are selected to measure the laser beam wavefronts, and then the origin, evolution, and causes of wavefront distortion are analyzed. Further, the effects of installation stress of optical devices and quality of Ti:sapphire crystals on the wavefront are investigated. The results demonstrate that the laser wavefront distortion increases with the increasing number of large-aperture optical devices. Facet fabrication and installation and debugging errors of optical lenses are particularly important factors affecting wavefront distortion in a Ti:sapphire laser amplifier. Such errors greatly affect the focusing ability of the laser. Measuring the wavefront of the laser system can help optimize and control the wavefront distortion of the entire system. In addition, such measurements can improve beam quality, focal spot properties, and focusing power density.
作者
王建业
郭震
於亮红
甘泽彪
李文启
梁晓燕
Wang Jianye;Guo Zhen;Yu Lianghong;Gan Zebiao;Li Wenqi;Liang Xiaoyan(State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;Vniversity of Chinese Academy of Sciences j Beijing 100049,China;ShanghaiTech University, Shanghai 201210, China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2019年第8期37-42,共6页
Chinese Journal of Lasers
基金
国家自然科学基金(61775223)
中国科学院战略性科技先导专项(B类)(XDB1603)
关键词
激光器
拍瓦系统
波前演变
焦斑
钛宝石
lasers
petawatt system
wavefront evolution
focal spot
Ti:sapphire
