漫透射成像法激光强度时空分布测量装置
Pang Miao, Yuan Xuewen, Gao Xueyan
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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: CCD diffused transmission imaging method is used to measure laser intensity distribution and power. The measurement principle of the design is presented. The designed system’s configuration is summarized. There are particular introduction for each part of the system. The scattering properties of the diffusion screen is researched through experiment. There is highlighting information on the design of optical system, light path, reflector, focal length and aperture of camera lens, and depth of field of CCD camera are respectively introduced. The data processing software are introduced. The design implements large laser spot intensity distribution measurement and power measurement in small space at the same time, it has the advantages of high resolution(5 mm) for intensity distribution measu
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Key words:
- laser measurement /
- intensity distribution /
- ccd imaging method /
- diffused transmission
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