端泵Nd:YVO_4晶体端面镀制腔镜对其热透镜影响的理论分析  

Theoretical analysis about resonator mirror on the end face of end pumped Nd:YVO_4 to affect it′s thermal lens

作　　者：肖孟超[1] 李淑静[1] 罗宁宁[1] 檀慧明[2] 

机构地区：[1]无损检测技术教育部重点实验室(南昌航空大学),江西南昌330069 [2]中国科学院长春光学精密机械与物理研究所,吉林长春130022

出　　处：《激光与红外》2009年第10期1060-1063,共4页Laser & Infrared

摘　　要：用ANSYS对吸收15 W808 nm泵浦光的端泵Nd∶YVO4晶体进行了温度场和变形量模拟。计算了Nd∶YVO4晶体单端有腔镜和两端都无腔镜情况下的热透镜解,得到了在Nd∶YVO4晶体上镀制腔镜会显著增大其热透镜的结论。用马赫-泽德干涉仪实测了Nd∶YVO4晶体热透镜解,该解与有限元模拟解相符,证明结论可靠,对大功率LD端泵的Nd∶YVO4激光器的腔型设计具有指导意义。Through simulating with the ANSYS the temperature field and deflection of the Nd： YVO4 crystal which absorbed 15 W 808 nm light from the end face. Calculating the thermal lens of the Nd：YVO4 crystal with and without mirror on the end face. Coming to a conclusion that coating the resonator mirror on the end face of the Nd：YVOg crystal can increase the thermal lens effect obviously. The thermal lens solution is verified by detecting the thermal lens by Mach-Zehnder interferometer. So the conclusion is instructive for the design of resonator of Nd ： YVO4 laser endpumped by high power LD.

关 键 词：ND:YVO4 热透镜 端面形变 

分 类 号：TN248.1[电子电信—物理电子学]