Far-filed divergence angle is an important index to evaluate the comprehensive performance of laser.According to the principle of measuring divergence angle by focusing lens method,a highly integrated portable measurement system for far-field divergence angle of large aperture and high energy laser is designed.The system uses knife-edge method to measure the waist diame-ter of laser beam,and then obtains the measurement result directly by software.The practical test shows that the system can accu-rately measure the divergence angle of laser far-field,and the measurement accuracy is better than 2%.
关键词
激光器/刀口法/远场发散角/测量系统
Key words
laser/knife-edge/far-field divergence/measuring system
维普
万方数据