漫透射成像法激光强度时空分布测量装置

庞淼; 袁学文; 高学燕

强激光与粒子束, 2010, 22 (12): 2839, 网络出版: 2011-01-05

漫透射成像法激光强度时空分布测量装置

Measurement system of laser intensity distribution based on diffused transmission imaging

论文大纲

庞淼 ^*袁学文高学燕

作者单位

中国工程物理研究院应用电子学研究所, 四川绵阳 621900

激光测量强度分布 CCD成像法漫透射 laser measurement intensity distribution CCD imaging method diffused transmission

摘要

提出用CCD漫透射成像法测量激光强度时空分布和激光功率,给出了测量原理, 简要叙述了装置总体结构, 介绍了测量装置各部分, 给出了散射屏的散射特性, 重点分析了光路布局、镜头焦距、光圈、景深、滤光片的参数选择, 介绍了数据处理软件, 给出了激光强度分布测量实验结果。结果表明：漫透射成像法测量激光强度时空分布是可行的, 该装置测量强度分布分辨力高达5 mm;测量功率准确、可靠, 测量不确定度小于6%, 使用方便, 实现了在小空间内对大光斑进行功率和强度分布的同时准确测量。

Abstract

The design use CCD diffused transmission imaging method to measure laser intensity distribution and power. The measurement principle of the system is presented. The system’s configuration is summarized. There are particular introduce for each part of the system. The scattering properties of diffusion screen is researched through experiment; There is a highlighting information on the design of optical system, light path, reflector, focal length and aperture of camera lens, depth of field of CCD cameral etc are respectively introduced. The data processing software are introduced. the system is used for measuring laser spot, which validate diffused transmission imaging method’s correctness. It provides a new way to measure laser parameter. The design implements large laser spot intensity distribution and power measurement at the same time in small space, it has the advantage of high resolution(5mm) for intensity distribution measurement and of high accuracy(6%) for power measurement．

参考文献

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庞淼, 袁学文, 高学燕. 漫透射成像法激光强度时空分布测量装置[J]. 强激光与粒子束, 2010, 22(12): 2839. Pang Miao, Yuan Xuewen, Gao Xueyan. Measurement system of laser intensity distribution based on diffused transmission imaging[J]. High Power Laser and Particle Beams, 2010, 22(12): 2839.

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