LD端面泵浦激光晶体热效应分析  

Study on Thermal Effect of LD End-pumped Laser Crystal

作　　者：郝娟[1] 李明真[2] 于家峰[2] 刘贵忠[2] 杨海莲[2] 

机构地区：[1]山东师范大学物理与电子科学学院,山东济南250014 [2]德州学院物理系,山东德州253023

出　　处：《枣庄学院学报》2007年第2期8-10,共3页Journal of Zaozhuang University

摘　　要：针对二极管激光器端面泵浦Nd:YVO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,得出了矩形截面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.研究结果表明,在泵浦功率为18W时,激光晶体泵浦面最高升温344.4K,最大热形变量2.85μm.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 anisotropic square thermal model of laser crystal was established, for the case of the performance features of LD end pumped Nd： YVO 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. Study shows, the highest temperature on the facet of the crystal was 344.4 K and the thermal distortion was 2.85 . Through the study on temperature fields distribution and facet distortion, the thermal effect can be solved theoretically.

关 键 词：激光晶体 POISSON方程 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]