Nd:CNGG激光器热透镜效应高斯光束数值模拟  

Numerical simulation of thermal lensing effect of Nd:CNGG laser with Gaussian beam

作　　者：李奇楠[1] 罗小洁 张韬[1] 丁状 向万贵 李栋燕 于海平 LI Qinan;LUO Xiaojie;ZHANG Tao;DING Zhuang;XIANG Wangui;LI Dongyan;YU Haiping(School of Science,Qiqihar University,Qiqihar 161006,China)

机构地区：[1]齐齐哈尔大学理学院,黑龙江齐齐哈尔161006

出　　处：《高师理科学刊》2023年第4期32-35,共4页Journal of Science of Teachers＇College and University

摘　　要：采用谐振腔内光束传输矩阵模拟的方法,对工作物质为Nd:CNGG晶体的谐振腔进行设计,考虑了Nd:CNGG晶体的热透镜效应,将Nd:CNGG晶体等效为薄透镜,利用Matlab软件进行了谐振腔内高斯光束的模拟.热透镜效应会对谐振腔的稳定性产生影响,并且影响输出激光的光束质量.热透镜效应严重时将破坏谐振腔的稳定性,使激光器无法输出激光.A resonator with Nd:CNGG crystal as its working material was designed by using the simulation method of beam propagation matrix in the resonator.Considering the thermal lensing effect of Nd:CNGG crystal,the Nd:CNGG crystal was equivalent to a thin lens and the Gaussian beam in the resonator was simulated using Matlab software.The thermal lens effect will affect the stability of the resonator and the beam quality of the output laser.When the thermal lens effect is serious,the stability of the resonator will be destroyed,so that the laser can′n output laser.

关 键 词：高斯光束 Nd:CNGG 热透镜效应 MATLAB 

分 类 号：TN248[电子电信—物理电子学]