利用郎奇法测量激光束斑线度的理论推广  

Development of Laser Beamwidth Measurement Employing the Ronchi Technique

作　　者：何苏友 杨亚文[1] 

机构地区：[1]上海师范大学实验中心,200234

出　　处：《应用激光》1993年第3期109-112,共4页Applied Laser

基　　金：上海市青年科学基金

摘　　要：对应用于激光束斑测量的朗奇法理论作了进一步推广,并进行了数值计算,发现朗奇板的通光线宽D小于非通光线宽d的条件下,可以有效地拓宽测量范围。给出了d=3D情形的测量方程,最大理论误差仅为2％。In the paper, we have theoretic popularized the Ronchi technique as applied to measuring the diam-eter of Gaussian beams, and further given the numcrical results. The measurement range can be broadened on condi-tion that the transmitting region(D) is less than the obstructing region(d) in a Ronchi Ruling .Finally, themeasurement equation was given when d=3D but the maximum theoretical crror is only 2%.

关 键 词：朗奇法 测量 理论 激光光度 线度 

分 类 号：TN247[电子电信—物理电子学]