激光技术2011，Vol.35Issue(3)：322-325,4.DOI:10.3969/j.issn.1001-3806.2011.03.010
简易型大直径激光束功率能量在线测量装置
A simple online large-spot laser power/energy measurement device
摘要
Abstract
In order to eliminate effect of inhomogeneous light spot, light intensity randomness, beam off-axis in the process of online large-spot laser energy measurement, a simple method was introduced. The laser beam was collected with a common diffusive plate and its spot was decreased so that its spatial information was eliminated and only the intensity information was reserved. At the same time, the sampling spots were laid in the region diffusive light could reach so as to eliminate effect of transmission section and polarization state. Furthermore, the distance between sampling spots and the diffusive plate was much greater than beam size to eliminate the effect of insufficiency of the sensor receiving angle. Laser energy was obtained by a photoelectric integrator. Experiment results indicate that the response in the laser detection surface is coincident and partial intensity change and laser divergence have little effect on the measurement result. The above suggested method can eliminate effect of many factors and ensure the measurement accuracy.关键词
测量与计量/激光功率能量/在线测量装置/漫射板/标定Key words
measurement and metrology/ laser power and energy /online measurement device/diffusive plate /calibration分类
信息技术与安全科学引用本文复制引用
魏继锋,彭勇,高学燕,周山..简易型大直径激光束功率能量在线测量装置[J].激光技术,2011,35(3):322-325,4.基金项目
国家八六三高技术研究发展计划资助项目 （）
