研制一台大能量高稳定性的钕玻璃激光器。采用陶瓷紧包聚光腔, 双脉冲氙灯侧面泵浦棒状磷酸盐钕玻璃, 平行平面谐振腔实现激光器大能量、稳定性输出。应用光线追迹软件, 仿真聚光腔内钕玻璃激光棒泵浦光场, 分析聚光腔的泵浦光分布,优化聚光腔设计。采用半桥逆变式串联谐振充电的电源主电路, 应用PID控制技术的控制电路实现激光器高稳定输出。通过实验分析计算, 钕玻璃激光器输出单脉冲能量为214 J、脉宽为2 ms, 激光能量输出的稳定性为±0.7%, 电-光转换效率为1.9%和光束质量M2为1.5的激光。

A high energy and high stability Nd∶glass laser had been developed. Using ceramic tight package pumping cavity, a phosphate Nd∶glass rod that was pumped by two pulse xenon lamps and plane-parallel cavity resonator , it realized the output of high energy. Appling ray tracing software, the pumping light field of Nd∶glass laser rod is simulated in convergent cavity, the distribution of pump light was analyzed and the design of convergent cavity is optimized. Using main circuit of laser power supply that adopts charging circuit of series resonance of half bridge inverter type and control circuit that applies control technology of PID, it developed high stability output of laser power supply. Through the experiment analysis, the output single pulse energy of Nd∶glass is 200 J, and the pulse width is 2ms, the output stability of laser energy is ±0.7%, conversion efficiency of electricity-light is 1.9% , and beam quality M2 is 1.5.