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对半导体激光器进行光学准直是空间光通信系统必须进行的重要工作。文中简述了准直通常使用的方法，测试了使用单透镜对一种３５ｍＷ半导体激光器的准直结果，准直效率约为６０％，准直后的发射角为０４～０７５ｍｒａｄ。
Optical alignment of semiconductor lasers is an important work that space optical communication systems must do. In this paper, the method of collimation is briefly described. The collimation result of a 35mW semiconductor laser using a single lens is tested. The collimation efficiency is about 60% and the collimated emission angle is 04 ~ 075 mrad.