钕玻璃激光器热容方式运行的热负透镜效应实验研究  

Experimental Study of the Thermal Lens Effect of Nd∶glass Laser in Heat Capacity Operation

作　　者：衣学斌[1] 陈鸿鸣[1] 钟鸣[1] 

机构地区：[1]西南技术物理研究所,四川成都610041

出　　处：《激光与红外》2007年第1期44-47,共4页Laser & Infrared

摘　　要：钕玻璃激光器采用双灯对称紧耦合非聚焦泵浦腔,激光棒的冷却通道与闪光灯的水冷却通道分开且相互独立。用重复频率10Hz、脉冲宽度250μs的两盏闪光灯同时进行侧面对称抽运,抽运功率900W。激光器先后以热容方式及常规水冷方式运行10s,分别完整采集100个光脉冲的光斑图像,并在其中分别依次等间隔取样16个光斑。通过对比分析光斑变化趋势,热容方式运行的钕玻璃激光器的热透镜效应是负透镜效应,明显有别于常规方式运行的正透镜效应。实验结果对进一步了解钕玻璃激光器热容工作方式运行的输出特性具有一定的参考价值。The designing construction of Nd：glaas laser cavity is double flashlamp pumped, symmetrical, close coupling and unfecused. The cooling channels of Nd：glass rod are separated from water-cooling channels of flashlamp independently. Through 10s experiment, laser beam patterns have been measured at 10Hz repetition rate and 250μs pulse duration of two flashlamps for 900W pump power in heat capacity operation and general water - cooling operation successively. 16 facular pictures have been collected from total 100 facular pictures in same interval. The contrastive facular pictures show that the thermal lens effect of beat capacity operation is negative lens effect not same as convex effect of general water-cooling operation. The obtained result is favor of the deferent characteristic of Nd：glass laser in heat capacity operation.

关 键 词：钕玻璃激光器 热容运行方式 热透镜效应 负透镜效应 

分 类 号：TN248.1[电子电信—物理电子学]