光纤微透镜用于阵列半导体激光器快轴准直研究  

Experimental Study by Using the Micro-cylindrical Lens as the Fast Axis Collimator for Laser Diode Array

作　　者：高雪松[1] 高春清[1] 高明伟[1] 李家泽[1] 魏光辉[1] 

机构地区：[1]北京理工大学信息科学技术学院431教研室,北京100081

出　　处：《激光与红外》2005年第8期563-565,共3页Laser & Infrared

摘　　要：文章采用石英光纤作为柱透镜,进行阵列半导体激光器的快轴准直实验研究,采用ISO推荐的光强二阶矩的方法,测量了发光面为1μm×150μm的阵列半导体激光器准直后的光束半径、远场发散角、束腰位置、瑞利长度,并根据测量结果计算了光束传输因子(M2因子)。以此为基础,研制了耦合光学系统,采用直径200μm柱面透镜准直后,阵列半导体激光器快轴方向发散角可减小到0.42,°系统准直耦合效率达到89%以上。Using the micro-cylindrical lens as the fast axis collimator for laser diode array is studied. The fast axis collimator beam parameters measurement of laser diode array（LDA） with an emitting area of 1μm×150μm are measured by using the method of second order moment. The waist widths, divergences, waist positions, Rayleigh lengths and M2 factors of the LDA in x,y direction are determined. The fast axis divergence of LDA is reduced to 0.42°. Optical system for coupling of LDA is designed ,which yields coupling efficiency of above 89% for 200μm fiber respectively.

关 键 词：半导体激光器 光束参数测量 快轴准直 M^2 因子 

分 类 号：TN248.4[电子电信—物理电子学] TN253