端面抽运激光晶体热形变及温度场分布研究  

Study of Temperature Distribution and Deformation of the End-face in End-Pumped DPL

作　　者：张小龙[1] 沈金华[1] 蔡德芳[1] 王石语[1] 文建国[1] 过振[1] 

机构地区：[1]西安电子科技大学技术物理学院,西安710071

出　　处：《光子学报》2007年第2期197-200,共4页Acta Photonica Sinica

基　　金：国防科技固体激光技术重点实验室基金(51456050104DZ0101)资助

摘　　要：用有限元方法研究了端面抽运Nd∶YAG激光器中激光晶体的温度和端面热形变分布规律.研究表明,激光晶体的端面热形变分为端面伸长形变和鼓出形变两种,晶体的热形变透镜效应是由鼓出形变引起的.在端面抽运的Nd∶YAG晶体中采用第三类热传导边界条件,实验测量了晶体的端面伸长和端面鼓出形变,结果与理论分析相一致.The thermal deformation of Nd ： YAG laser which side face is isothermal or constant coefficient of heat conduction was studied. Thermo elasticity theory and finite-element method is used to simulate temperature and deformation distribution in end-pumped DPL. Using interferometer, thermal-deformation is measured on the end face. The thermal deformation of Nd ： YAG should be combined of thermal extension and thermal bellying deformation. It is demonstrated that the temperature field and deformation field which is obtained by the third boundary conditions is more appropriate to the truth.

关 键 词：二极管抽运固体激光器 端面热形变 形变测量 端面泵浦 

分 类 号：TN248.1[电子电信—物理电子学]