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LD端面泵浦Nd:KGW激光器热效应的理论研究
引用本文:刘树山,刘敏,李雷,陈飞,王伟卫,刘杰. LD端面泵浦Nd:KGW激光器热效应的理论研究[J]. 红外, 2008, 29(6): 31-35
作者姓名:刘树山  刘敏  李雷  陈飞  王伟卫  刘杰
作者单位:山东师范大学物理与电子科学学院,山东济南,250014
摘    要:通过建立晶体的热传导模型,合理设定边界条件和求解泊松方程,得到了晶体内部的温度分布图。进而计算了Nd:KGW晶体由端面形变引起的光程差和总的光程差,同时得到了不同抽运功率下的热焦距。计算结果表明,Nd:KGW晶体的热效应十分严重,晶体的端面形变是导致热透镜效应的主要因素。

关 键 词:端面泵浦  Nd:KGW晶体  泊松方程  热效应  端面形变  热焦距
文章编号:1672-8785(2008)06-0031-05
修稿时间:2008-01-21

Theoretical Study of Thermal Effect in Diode-end-pumped Nd : KGW Laser
LIU Shu-shan,LIU Min,LI Lei,CHEN Fei,WANG Wei-wei,LIU Jie. Theoretical Study of Thermal Effect in Diode-end-pumped Nd : KGW Laser[J]. Infrared, 2008, 29(6): 31-35
Authors:LIU Shu-shan  LIU Min  LI Lei  CHEN Fei  WANG Wei-wei  LIU Jie
Abstract:The temperature field distribution in a Nd:KGW crystal is obtained by establishing a thermal conduction model of a laser crystal,setting a reasonable boundary and solving the Poisson equation.Moreover,the optical path difference (OPD) induced by the end-face deformation and total OPD are calculated.Simultaneously,the thermal focal lengths of a laser crystal at different pumping powers are obtained.The calculating results show that the thermal effect of the Nd:KGW crystal is very serious and it is mainly caused by the end-face deformation of the crystal.
Keywords:end-pumped  Nd  KGW crystal  Poisson equation  thermal effect  end-face deformation  thermal focal length
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