自聚焦透镜在全固态激光器中的应用

摘要

In order to analyse the application of self-focusing lens in all solid state lasers,this pa-per introduces LD fiber coupling end-pumped Nd:YAG laser system components.Based on AB-CD formula and adopting q parameter,the transfer matrix of self-focusing lens is used to make a theoretical analysis of the impact of self-focusing lens upon the transmission behaviors of LD pumped beam of light.LD end-pumped solid laser system is established,and the effect of the pat-tern matching degree between the pumping laser and oscillation laser upon the behaviors of laser output is studied.The research results indicate that self-focusing lens used as the coupling lens in all solid-state lasers can not only simplify the pumping system but also improve the coupling effi-ciency of pumping system.%全固态激光器被广泛应用于光学传感、干涉测量、微波光电子等重要领域。为了分析自聚焦透镜在全固态激光器中的应用，本文介绍了 LD 光纤耦合端面泵浦 Nd：YAG 激光系统组成，利用自聚焦透镜的传输矩阵，根据 ABCD 公式，采用 q 参数，理论分析了自聚焦透镜对 LD 泵浦光束的传输特性。建立了 LD 端面泵浦固体激光系统，研究了泵浦光与振荡激光的模式匹配程度对激光器输出特性的影响。研究表明，自聚焦透镜用作全固态激光器泵浦光的耦合镜，可简化泵浦系统，提高泵浦光的耦合效率。