中文摘要：

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。

英文摘要：

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.