LD光束在自聚焦透镜中的传输特性  

Propagation of Laser Diodes Beams Through a Gradient Index Lens

作　　者：徐强[1] 曾晓东[2] 安毓英[2] 曹长庆[2] 

机构地区：[1]西安电子科技大学理学院,西安710071 [2]西安电子科技大学技术物理学院,西安710071

出　　处：《光子学报》2007年第B06期72-74,共3页Acta Photonica Sinica

基　　金：国家自然科学基金(60277004)资助

摘　　要：基于分析激光二极管光束传输特性,运用厄米-高斯光束描述其远场分布.将自聚焦透镜用于激光二极管的光束整形,用2阶传输矩阵描述自聚焦透镜.运用Collins衍射积分公式,分析了LD光束在自聚焦透镜中传输场分布的解析表达式.在此基础上,数值计算了一种LD光束在自聚焦透镜中场分布.该模型结构简单,可用于分析光束传输特性和设计光束整形系统.Based on the analysis of the beam output characteristics of laser diodes（LD）, the far field of LD is described by Hermite-Gaussian beams. Graddient index lens （GRIN lens） are used to shape LD beams. GRIN lens are described by 2 × 2 transfer matrix. By using the generalized Collins integral, the propagation characteristics of LD beams passing through an GRIN lens is studied. The computed results agree well with the measured far-field data of practical devices. This model has a simple mathematical structure, and is expected to provide a useful tool for the design of a beam shaping system and analysis of the propagation properties of laser diode beams.

关 键 词：激光二极管 椭圆厄米高斯光束 自聚焦透镜 光场分布 

分 类 号：TN248[电子电信—物理电子学]