激光光束直接测量模型

基金项目:

国防科工委重点预研资助项目

详细信息

Direct Measurement Model of Laser Beams

College of Laser Engineering, Beijing Polytechnic University, Beijing 100022, China

摘要: 针对空心探针方法,对探针微孔孔径、测量点数对测量精度的影响进行了分析,建立了光束直接测量的模型,并进行了计算.当被测光束与探针微孔孔径比为 1%时,相对误差小于 2%;每条扫描线的测量点数为 30时,误差小于 0.2%,得到了满足测量精度要求的微孔的孔径、测量点数,实现了对大功率激光功率分布的有效检测.此结果适于光束直接测量的应用.
- 激光光束 /
- 测量精度 /
- 模型参数
Abstract: According to the method of rotating pinhole needle, the effect of pinhole size and measure dot number on measurement accuracy is analyzed, and the direct measurement model of laser beams is founded. As the aperture ratio of measured beam and pinhole is 1%, the relative error is less than 2%. As the measure dot number of every scanning line is 30, the relative error is less than 0.2% so that the calculation results of satisfying measurement precision are obtained, which can be employed for the effective measurement of power distribution of large power laser, particularly suitable for the direct measurement of laser beams.
- laser beam /
- measurement precision /
- model parameter