物理学报2011，Vol.60Issue(6)：464-469,6.
神光Ⅱ升级装置远场准直系统研究
Far field auto-alignment system used in SG-Ⅱ-Up system
摘要
Abstract
The auto alignment system, which is used for the beam adjustment in high power laser system, is not only the key subsystem ensuring the routine operation effectually and safely, but also the key element involved in improving the far-field and near-field beam quality. Based on a skillful design of the grating and illumination-image system, a far field alignment system is realized. This system, which is based on a diffraction function of the grating, is characterized by the high performance and the simultaneous off-axis sample of the focus and the reference. The results, which are obtained when the system is used in pre-amplifier system of the SG- II -Up, show that the reposition accuracy of the grating reference is better than 8 μm, the jitter amplitude is less than 0. 59 μm. After the alignment, the deviation of the beam focus from the grating reference is no more than 10 μm.关键词
激光技术/激光光学系统/空间滤波器Key words
laser/ optical systems for lasers/ spatial filters引用本文复制引用
高妍琦,朱宝强,刘代中,彭增云,林尊琪..神光Ⅱ升级装置远场准直系统研究[J].物理学报,2011,60(6):464-469,6.基金项目
国家高技术研究发展计划(批准号:2007SQ804)、中日韩激光聚变高能量密度物理合作研究、中国科学院大科学装置配套改造项目资助的课题. （批准号:2007SQ804）
