基于LD双端面泵浦的Nd∶YAG高效率倍频激光器  

Experimental Study on High Efficiency Double Frequency Laser with LD Dual Pump Nd∶ YAG

作　　者：范嗣强[1] 李麒麟[2] 路永乐[3] FAN Si-qiang;LI Qi-lin;LU Yong-le(Key Laboratory of Photoelectric Material and Engineering, Chongqing Normal University, Chongqing 401331, China;Chongqing No.1 Middle School, Chongqing 400030, China;Department of Photoelectric, Chongqing University of Posts and Telecommunications, Chongqing 400065,China)

机构地区：[1]重庆师范大学市级高校光电材料与工程重点实验室,重庆401331 [2]重庆市第一中学,重庆400030 [3]重庆邮电大学光电学院,重庆400065

出　　处：《发光学报》2018年第6期830-837,共8页Chinese Journal of Luminescence

基　　金：重庆市教委应用基础研究项目(KJ1600311;KJ130655);重庆市科委前沿基础研究项目(cstc2014jcyj A70005);重庆市高校创新团队计划(CXTDX201601016)资助项目~~

摘　　要：报道了一种利用激光二极管(LD)双端面泵浦的Nd∶YAG激光晶体,Cr^(4+)∶YAG晶体被动调Q,LBO临界相位匹配腔内倍频的高转换效率的绿光激光器。分析了双端面泵浦YAG激光器的热效应,实验中LD双端面泵浦,采用U型平行平面腔结构对Nd∶YAG进行传导冷却。当总泵浦光为33.8 W时,得到被动调Q频率10 KHz、功率8.21 W的线偏振基频光输出。6.72 W的绿光输出的倍频效率为86%,输出光束为基模,M^2为1.4。实验表明双端面泵浦YAG倍频激光器具有很高的转换效率。A high efficiency all-solid-state green laser was reported which was double end-pumped by the laser diode（LD）Nd∶YAG,passive Q-switched by Cr^4＋∶YAG,and critical phase matched by LBO intracavity.The thermal effect of double end-pump YAG laser was analyzed.In the experiment,double end-pump of LD is used to conduct the conduction cooling of Nd∶YAG with the U-type parallel flat cavity structure.When the input power is 33.8 W,the output power of linear polarized light with 10 k Hz passive Q-switch is 8.21 W which leads to the output power instability of 6.72 W and frequency doubling efficiency of 86%.The output beam is the fundamental model and M^2reaches 1.4.The experiments show that the double end-pumped YAG frequency multiplication laser has quite high conversion efficiency.

关 键 词：双端面泵浦 被动调Q 腔内倍频 部分偏振光 高效率 

分 类 号：TN248.1[电子电信—物理电子学]