基于同轴照明和光栅取样的激光束准直远场监测系统

刘代中; 丁莉; 高妍琦; 朱宝强; 朱俭; 彭增云; 朱健强; 俞立钧

中国激光, 2009, 36 (5): 1101, 网络出版: 2009-05-22

基于同轴照明和光栅取样的激光束准直远场监测系统

Far-Field Detection System of Laser Beams Alignment Based on Gratings Sampling and On-Axial Illumination

论文大纲

刘代中 ^1,*丁莉 ²高妍琦 ¹朱宝强 ¹朱俭 ¹彭增云 ¹朱健强 ¹俞立钧 ²

作者单位

¹ 中国科学院上海光学精密机械研究所高功率装置物理联合实验室, 上海 201800

² 上海大学机械制造及自动化学院, 上海200072

激光技术光束准直光栅远场 laser technique beam alignment grating far-field

摘要

利用高功率激光装置空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, 其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。

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).

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刘代中, 丁莉, 高妍琦, 朱宝强, 朱俭, 彭增云, 朱健强, 俞立钧. 基于同轴照明和光栅取样的激光束准直远场监测系统[J]. 中国激光, 2009, 36(5): 1101. Liu Daizhong, Ding Li, Gao Yanqi, Zhu Baoqiang, Zhu Jian, Peng Zengyun, Zhu Jianqiang, Yu Lijun. Far-Field Detection System of Laser Beams Alignment Based on Gratings Sampling and On-Axial Illumination[J]. Chinese Journal of Lasers, 2009, 36(5): 1101.

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