激光二极管端面泵浦激光晶体热效应研究  

Study on Thermal Effect of LD End-pumped Laser Crystal

作　　者：李明真[1] 朱占收[1] 于家峰[1] 杨海莲[1] 刘贵忠[1] 

机构地区：[1]德州学院物理系,山东德州253023

出　　处：《赣南师范学院学报》2007年第3期31-34,共4页Journal of Gannan Teachers' College(Social Science(2))

摘　　要：针对二极管激光器端面泵浦Nd:YVO4晶体工作特点,提出矩形各向异性激光晶体热模型.在晶体周边冷却,两通光面绝热情况下,通过求解泊松热传导方程,精确计算出矩形截面Nd:YVO4激光晶体的温度分布,进而求解Nd:YVO4激光晶体端面热膨胀量以及不同泵浦功率下的热焦距.研究结果表明,在泵浦功率为20 W时,激光晶体泵浦面最高升温503.4 K,最大热形变量5.42μm.对激光晶体温度场分布和端面热形变的研究,为解决晶体热效应提供了理论基础.An anisotropie square thermal model of laser crystal was established, for the sake of the performance features of LD end pumped Nd： YVO4 crystal. The temperature fields distribution in Nd：YVO4 crystal has been obtained based on Poisson equation with surrounding cooled thermal model. The thermal distortion of the light-passing-face was calculated and the loci were obtained at different pump power. Study shows, the highest temperature on the facet of the crystal was 503 K and the thermal distortion was 5.42 when the pump power is 20W. Through the study on temperature fields distribution, facet distortion and the loci, the thermal effect can be solved theoretically.

关 键 词：激光晶体 ND:YVO4晶体 端面泵浦 热效应 

分 类 号：TN248.1[电子电信—物理电子学]