管状激光器的介质温升研究  

Study on the temperature rise in a tube solid-state laser

作　　者：邓艳芳[1] 欧群飞[2] 梁峰[3] 

机构地区：[1]武汉理工大学理学院数学系,湖北武汉430070 [2]西南技术物理研究所,四川成都610041 [3]中国工程物理研究院,四川绵阳621900

出　　处：《激光杂志》2007年第5期27-28,共2页Laser Journal

摘　　要：基于二次吸收发热模型,考虑了激光介质的端面效应,对有限尺寸的管状YAG激光器介质温升进行了计算分析。结果表明,介质横截面上的温升呈环状分布,激光管壁中心部分的温升最大,内壁和外壁的温升较小,且外壁温升低于内壁温升。聚光腔反射率越大、厚度越厚、泵浦功率越大、吸收系数越大,都会使得介质内的温差升高,从而使得热效应不断加剧。Based on the quadratic absorbing heat deposit model, the temperature rise in the YAG laser tube has been calculated under different thickness, pumping power, reflectivity of the reflector, and absorbing efficiency of the laser medium. The results show that the temperature rise of the inside - pumped YAG laser tube is different from that of the rod laser, and at the steady state, the temperature rise distribution on the cross-section of tube is annular. The temperature rise is larger inside the tube as compared to that at the inner - and outer - surthces of the tube, and the temperature rise of the inner surface is bigger than that of the outer surface.

关 键 词：激光技术 数值计算 温度分布 管状固体激光器 

分 类 号：TN248.1[电子电信—物理电子学]