摘要
针对神光-Ⅲ主机激光装置片状放大器的洁净控制采取了一系列有效措施。除了设计上更有利于洁净控制外,机械结构件表面残留不挥发性有机污染物也达到了低于1 mg/m2的水平。为了进一步提高放大器洁净度,进行了光照清洗。实验结果表明：神光-Ⅲ主机装置的洁净水平与美国国家点火装置接近,光照清洗时内部气溶胶等级维持在5 000~10 000之间,且绝大部分表面有机残留物在最初几发光照清洗中已被释放,从而得到一个干净的放大器腔体,减少了放大器运行时光学元件受污染和损伤的几率。
A contamination control plan was introduced to improve the cleanliness of slab amplifiers for Shenguang-Ⅲ laser driver,including laser structure optimization and precision cleaning methods,and the non-volatile-residue amount on the surface of mechanical structures was lower than 1 mg/m2 after precision cleaning.The illuminating cleaning experiment by flashlamp light was introduced to further improve the facility＇s cleanliness.The results indicate that the cleanliness of Shenguang-Ⅲ laser driver is close to that of NIF,but better than other similar devices in the world.The aerosol concentration in Shenguang-Ⅲ amplifier cavity during flashlamp shots maintained among 5 000 to 10 000 particles（larger than 0.5 μm） per cubic foot,and most of the surface organic residue was released at the first few shots and a clean amplifier was obtained finally.The significant improvements in cleanliness have provided a strong guarantee for the safe operation of Shenguang-Ⅲ laser driver.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2012年第1期1-2,共2页
High Power Laser and Particle Beams
基金
国家高技术发展计划项目
关键词
激光驱动器
片状放大器
洁净度
光照清洗
laser driver
slab amplifier
cleanliness
illuminating cleaning
