椭圆柱面-平面和平面-圆柱面组合透镜对准直光束的压缩性能分析

由于双椭圆柱面透镜压缩准直光束的方案中存在着透镜加工难度大和不易于调整的不足,本文采用椭圆柱面-平面和平面-圆柱面组合透镜对半导体激光器慢轴方向准直光束进行压缩;根据光线的基本传播原理,通过计算和推导,阐述了该方案的原理,与此同时,对透镜的可加工性和在实验中可调整的优点给予了充分地展示。用解析式表达讨论了在无损耗和有反射损耗的两种情况下出射光束光强在出射面上的光强空间分布特点,为实验提高光束质量提供必要的理论依据。

The Compression Performance of Ellipse-plane Lens and Plane-cylinder Lens

This paper includes two parts.Firstly,since the project of double-elliptic cylinder lens compressing collimated laser beam has the insufficiency that the lens is difficult to manufacture and is not easy to adjust,we have adopted new project to compress the collimated laser beam along the slow axis of semiconductor laser by ellipse cylinder-plane lens and plane-cylinder lens.According to the basic principle of light-ray propagation and with the method of ray-tracing through calculations and deduction,the principles and advantages of the new project have been explained and discussed.At the same time,the merit of new project easy to manufacture and to adjust easily in the experiment has show sufficiently.Secondly,the spatial distribution characteristic of lighting intensity in the output plane,under no loss or having reflection loss,has been expressed and discussed with analytic expression.This article provides the necessary theory foundation for improving the beam quality in the experiment.