中文摘要：

介绍一种半导体激光器的设计方法,即采用littrow结构激光头、双层温控、精密恒温、PDH压缩线宽来进行总体设计,并详细地给出了激光头littrow结构的设计与加工细节,得出电流、温度精密可调可控的小型化半导体激光器装置。

英文摘要：

The overall structure of the lasers,including the light source,temperature control,precision misbalanced,and compression line width are the important characters of the design of the semiconductor lasers.This paper mainly introduces a kind of semiconductor lasers,namely the design method of Littrow structure by double temperature control,and much results of the parameters are gave.