测量激光器光束强度分布和发散角的新方法  

The new method for measuring the intensity and divergent angle of laser beam

作　　者：冯璧华[1] 龚国强[1] 彭志平[1] 

机构地区：[1]南京大学物理系

出　　处：《激光杂志》1992年第1期12-14,11,共4页Laser Journal

摘　　要：我们采用光纤技术进行空序→时序变换的方法,能实时显示相对光强分布曲线。如果激光器的谐振腔输出的光束是TEM_(00)模,采用该法在示波器上就能实时显示出高斯曲线的全貌,可以很方便的测出激光光束的半宽度和远场发散角。该方法是定量研究激光器横模模式的新方法。Using fibre light guide to transform spatial sequence into time sequence, displaying distribution curves of intensity of light are of real-time. If the light beam of output from laser resonant cavity is TEMoo mode, the complete picture of Gauss curve can be displayed real-time on the oscillograph employing this method. It is very convenient to measure the halfwidth and angle of divergence of far field from laser beam.This is a new method for quantitative studies in laser transverse mode.

关 键 词：光纤 激光器光束 发散角 测量 

分 类 号：TN248[电子电信—物理电子学]