针对气体激光器细光束的尺寸参数的工业测量和质量控制, 提出一种朗琴栅尺扫描TEM00基模高斯激光光束的测量分析仪。所研制的仪器可以测量分析光斑1/e2直径、横场分布和调制对比度等光束参数, 特别是可以在近场测定1/e2光束远场发散角。描述了该仪器的基本原理、结构及测量结果。

An analyzing instrument of the Ronchi ruling type for measuring TEM00 made Gaussian beam parameters of lasers in quality control in industry is described. The instrument can be used to measure cross field distrbution of a Gaussian beam and used in the measurements of the 1/e2 beam diameter and the far field beam divergence in the near field. The basic principle of the measurement and the experimental results are reported.