摘要
利用高功率激光装置中间滤波器小孔成像和取样光栅的衍射,结合插入的负透镜发散激光来同轴照明小孔,设计出一套新型光路远场监测方案。该方案利用光栅衍射可以灵活取样激光远场,并且在实验平台上进行了实验验证。实验结果表明,共远场监测系统的准直精度达到小孔直径的1.42%,能够满足准直系统远场调整精度(小于小孔直径5%)的要求。
Utilizing the image of spatial filter＇s pinhole of high power laser systems and diffraction of sample grating, with an insertable negative lens for the pinhole＇s on-axial illumination, a new system for far-field detection of laser beam is presented. This far-field detection system, which is fully demonstrated on the experimental system, can fully use space through off-axial grating sampling. The experimental results indicate, that the average far-field alignment error is less than 1.42 % of spatial filter pinhole diameter, which meets the alignment system requirements （5 % of spatial filter pinhole diameter）.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2009年第5期1101-1104,共4页
Chinese Journal of Lasers
基金
国家863计划(2007SQ804)
中日韩激光聚变高能最拼度物理合作研究资助课题
关键词
激光技术
光束准直
光栅
远场
laser technique
beam alignment
grating
far-field
