LD端面泵浦矩形Nd:YVO_4晶体的热效应研究  

Study of thermal effect of LD end-pumped with rectangular crystalloid of Nd:YVO_4

作　　者：毕学进[1] 周壮[1] 董邵然[1] 乔焱[1] 崔伟[1] 李健[1] 

机构地区：[1]山东师范大学物理与电子科学学院光学与光子器件实验室,山东济南250014

出　　处：《光学技术》2012年第6期725-728,共4页Optical Technique

基　　金：国家自然科学基金(61078032)

摘　　要：建立了矩形激光晶体的热传导模型。通过充分考虑晶体侧面与冷却液之间的对流传热,以及晶体端面与外界的热传导,建立了更为合理的边界条件。利用有限元差分法求解泊松方程,得到激光晶体内温度和温度场分布。研究结果表明,在考虑晶体的侧面对流和端面导热的情况下,得出了更符合实际的晶体温度场分布,计算的热焦距与实验测量结果更为吻合。The thermal conduct model of rectangular laser crystal is established. Considering the heat convection be- tween the side surface of the crystal with the cool water as well as the convective heat-transfer about the pumped surface, the more rational boundary conditions are established. Using finite element difference method and Poisson equation, temperature field in the crystal is obtained. The results show that the convective heat-transfer about the pumped surface and the side surface of the crystal can lead to more actual temperature field, the focal length is more coincident with the experiment.

关 键 词：端面泵浦 POISSON方程 对流传热 温度场 热效应 

分 类 号：TN248.1[电子电信—物理电子学]