【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。更多还原

【Abstract】 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).更多还原