LDA端泵浦电光调Q脉冲输出特性研究  

Study of Output Peculiarity of LDA Pulse End-puming Electro-optics Q-switch

作　　者：高润梅[1,2] 常胜江[2] 胡智勇[2] 方涛[2] 傅汝廉[2] 

机构地区：[1]桂林工学院数理系,广西桂林541004 [2]南开大学光学所,天津300071

出　　处：《激光与红外》2008年第11期1083-1086,共4页Laser & Infrared

基　　金：国家自然科学基金(No.60772105);桂林工学院科研启动基金(No.20060823)资助

摘　　要：利用晶体的电光效应制成脉冲式Q开关(PRM),实现谐振腔中反射镜的部分反射而形成激光振荡。激光介质为Nd∶YAG,采用300W准连续LDA(激光二极管阵列)端面泵浦,表面加微柱透镜和透镜导管进行光耦合,传输效率75%,电光晶体为KDP,平-凹腔结构,腔内放置介质膜起偏器,腔长11cm,退压式调Q,设计了实用的退压调Q电路,Q开关后沿触发,改进了硅光电二极管弱光测量电路,输出脉冲被调制,输出脉宽11ns,光-光转换效率10.8%,输出单脉冲能量4mJ,对实验结果进行了分析讨论。Using crystal electro-optic effect Q-switched pulse （PRM） was made, the realization of resonator mirror reflection of the part of a laser oscillation. Laser medium for Nd：YAG,300W LDA（ laser diode array）end-pumped continuous surface and micro-lens and lens catheter optical coupling efficiency of 75% transmission ,for the electro-optic crystal KDP,Ping-cavity structure, dielectric cavity placed polarizer, cavity length 1 l cm, the withdrawal pressure-Q- switched, a practical design of the retreat pressure Q-switched circuit, Q-switch along the trigger, improved low-light silicon photodiode measurement circuit, the output pulse modulation, the output pulse width 11 ns, light-light conver- sion efficiency of 10.8%, the output-4 mJ pulse energy,the experimental results are analyzed and discussed.

关 键 词：激光技术 电光调Q开关 光耦合 LDA泵浦 

分 类 号：TN248.1[电子电信—物理电子学]