全固体小型Yb∶YAG激光器热效应及输出特性研究  

Investigation on Thermal Effects and Output of All-solid-state Miniature Yb∶YAG Laser

作　　者：杨鸿儒[1] 左铁钏[1] 

机构地区：[1]北京工业大学国家产学研激光技术中心,北京100022

出　　处：《光子学报》2003年第8期907-910,共4页Acta Photonica Sinica

基　　金：国家 8 6 3激光技术创新基金资助项目 (编号 :2 0 0 30 10 3)

摘　　要：利用中红外相机及干涉测量技术研究了二极管泵浦小型Yb∶YAG激光增益介质在激光及非激光条件下的温度分布、温度梯度、热透镜效应 ,同时根据对热效应的研究 ,对激光器的参量进行了优化 研究了在不同掺杂浓度下激光器的输出特性 对于 2 .3at.%掺杂浓度 ,得到激光输出功率为 1.7W ,斜效率 2 6 .2 % ,光 光转换效率为 13.5 %的实验结果 ;对于 5 .0at.%掺杂浓度 ,得到激光输出功率为 2 .5W ,斜效率 5 1% ,光 光转换效率为 2 4 %的实验结果 。The thermal effects such as the temperature distribution, temperature gradient, and the thermal lensing effect inside all-solid-state miniature Yb∶YAG laser are investigated under the lasing and non-lasing conditions by using mid-infrared camera and interferomence measurement technology. The characteristic parameters of Yb∶YAG laser are optimized according to the thermal effect. Output characteristics of the laser are studied for different doping concentrations. The laser output power is 1.7 W, the slope efficiency and opt-optical efficiency are 26.2% and 13.5%, respectively, for 2.3 at.% doping. For 5.0 at.% doping concentration the laser output power of 2.8 W with the slope efficiency of 51% and opt-optical efficiency of 24% are obtained.

关 键 词：微小Yb:YAG激光器 温度分布 热透镜效应 激光二极管泵浦 

分 类 号：TN248.1[电子电信—物理电子学]