摘要
对二极管侧面泵浦的薄片激光器进行了热效应理论模拟和实验研究。针对大尺寸的复合薄片增益介质的热负荷与表面形变进行了有限元理论分析和数值模拟以及实验研究。在不同的泵浦条件下分别进行了波前相位测量,分析了高功率泵浦情况下,大尺寸薄片状激光晶体的形变状况。实验测量结果表明,大尺寸薄片晶体的表面热形变较小,热耗散功率密度降低,与有限元理论模拟分析的结果基本一致,增大激光增益介质的表面尺寸有利于减小热效应。
A diode array side pumped thin disk laser was investigated experimentally and theoretically. The thermal effect, the thermal deformation of surface and the aberration of the large scale composite thin disk gain medium were researched by Finite Element Analysis method and numerical calculation. The phase distribution of wavefront was measured in different pump conditions, and the distortion of gain medium was analyzed. Experimental results showed that the thermal aberration of the large size thin disk crystal was smaller; heat dissipation power density was lower, which were consistent with the results of theoretical analysis. Increasing the surface scale of the laser gain medium is beneficial to improve the thermal effect.
出处
《应用激光》
CSCD
北大核心
2011年第5期414-417,共4页
Applied Laser
基金
国家自然科学基金资助项目(项目编号:60678014)
关键词
激光技术
薄片激光器
侧面泵浦
波前变形
热耗散功率密度
laser technology
thin disk laser
side pumped
wavefornt aberration
heat dissipation power density
