大学物理实验
大學物理實驗
대학물리실험
PHYSICAL EXPERIMENT OF COLLEGE
2015年
4期
78-80
,共3页
刀口法%曲线拟合%发散角
刀口法%麯線擬閤%髮散角
도구법%곡선의합%발산각
knife-edge method%curve fitting%divergence angle
对刀口法测量He-Ne激光束发散角的测量原理从理论上进行了证明，然后根据激光束相对功率为0.25和0.75的点位于高斯分布曲线极大值两侧，距离为ep =0.6745σ=0.3373W ，对测量实验数据进行曲线拟合，求得其激光光束发散角。
對刀口法測量He-Ne激光束髮散角的測量原理從理論上進行瞭證明，然後根據激光束相對功率為0.25和0.75的點位于高斯分佈麯線極大值兩側，距離為ep =0.6745σ=0.3373W ，對測量實驗數據進行麯線擬閤，求得其激光光束髮散角。
대도구법측량He-Ne격광속발산각적측량원리종이론상진행료증명，연후근거격광속상대공솔위0.25화0.75적점위우고사분포곡선겁대치량측，거리위ep =0.6745σ=0.3373W ，대측량실험수거진행곡선의합，구득기격광광속발산각。
The method of edge of He-Ne laser beam divergence angle measurement principle is proved in theo-ry,and then according to the relative power of 0. 25 and 0. 75 points in laser Gaussian distribution curve on both sides of the maximum. The data measured in the experiment are processed by curve fitting,the laser beam divergence angle is obtained.
