外腔锁相改善半导体激光器列阵输出光束特性  

Improve output characteristics of diode laser arrays using phase lockingtechnique with an external cavity

作　　者：陈海波[1] 杨华[1] 陈建国[1] 严地勇[2] 陆丹[1] 高松[1] 

机构地区：[1]四川大学光电系,四川成都610064 [2]中国工程物理研究院应用电子研究所,四川绵阳621900

出　　处：《激光杂志》2005年第3期21-22,共2页Laser Journal

基　　金：国家自然科学基金委员会;中国工程物理研究院联合基金资助项目 (批准号 :10 2 760 2 6)

摘　　要：采用一个由快轴准直透镜和一个高反射率平面镜组成的简单外腔,实现了半导体激光器列阵(DLA)锁相运行,改善了DLA的出射光束质量。DLA远场出现了3个瓣,每瓣发散角为10mrad左右;光谱从自由运行时的2 .2nm压缩到了0 .3nm ;阈值电流由7A降低到了5 .5A。Phase-locking of a diode laser array has been achieved in a simple external cavity consisting of a fast axis collimating lens and a high-reflection coated external mirror.The quality of output beam has been improved.The far field pattern has 3 lobes,and the divergence of each lobe is about 10 mrad.We have narrowed the bandwidth from 2.2nm to 0.3nm and decreased the threshold current from 7.0A to 5.5A with and without feedback respectively.

关 键 词：二极管激光器阵列 外腔 锁相 远场 光谱 

分 类 号：TN248[电子电信—物理电子学]