高光束质量平-凸谐振腔Nd∶YVO_(4)激光器  

High Beam Quality Plano-convex Resonator Nd∶YVO_(4)Laser

作　　者：栾智杰 崔建丰[1,2] 王浪 邬小娇 李福玖 岱钦 LUAN Zhijie;CUI Jianfeng;WANG Lang;WU Xiaojiao;LI Fujiu;DAI Qin(Shenyang Ligong University,Shenyang 110159,China;Anshan ZY Laser Technology Co.,Ltd.,Anshan 114044,China)

机构地区：[1]沈阳理工大学理学院,沈阳110159 [2]鞍山紫玉激光科技有限公司,辽宁鞍山114044

出　　处：《沈阳理工大学学报》2025年第1期85-89,共5页Journal of Shenyang Ligong University

基　　金：国家重点研发计划项目(2022YFB4601603);2022年辽宁省“揭榜挂帅”科技计划重点项目;沈阳理工大学光选科研团队建设项目。

摘　　要：采用一种由878.6 nm激光二极管(LD)端面抽运Nd∶YVO_(4)晶体,获得高光束质量的1064 nm脉冲激光输出。使用Matlab软件对晶体热透镜焦距进行模拟分析,并通过软件计算选取合适的平-凸谐振腔腔型,缓解热效应的同时获得最佳输出状态。泵浦功率为48 W时获得平均输出功率15.03 W的1064 nm连续光输出。通过磷酸钛氧铷(RTP)电光调Q的方式,在重复频率为10 kHz时获得了稳定的1064 nm脉冲激光输出,最大输出平均功率为8.78 W,动-静转化比为72.9%,脉宽为8.70 ns,光束质量因子为1.2。实验结果表明:利用波长878.6 nm作为泵浦源并采用平-凸谐振腔的方式,有利于缓解晶体的热效应、提高光束质量、获得基模脉冲激光输出。It is proposed to achieve high beam quality 1064 nm laser output by using an 878.6 nm LD end-pumped Nd∶YVO_(4)crystal.Matlab software is utilized for simulating and analyzing the thermal lens focal length of the crystal,and an appropriate plano-convex resonator cavity configuration is selected through software calculation to alleviate thermal effects and achieve optimal output conditions.At a pump power of 48 W,an average output power of 15.03 W of 1064 nm continuous light output is obtained.By employing RTP electro-optic Q-switching,stable 1064 nm pulsed laser output is achieved at a repetition rate of 10 kHz,with a maximum average output power of 8.78 W,a dynamic-to-static conversion efficiency of 72.9%,a pulse width of 8.70 ns,and a beam quality factor of 1.2.The experiments demonstrate that using a pump source at 878.6 nm and employing a flat-convex resonator cavity configuration are beneficial for mitigating crystal thermal effects,improving beam quality,and obtaining fundamental mode pulsed laser output.

关 键 词：热透镜焦距 Nd∶YVO_(4)晶体 平-凸谐振腔 基模 

分 类 号：TN248.1[电子电信—物理电子学]