摘要
基于对LD端面泵浦Yb∶KGW激光晶体工作特点的分析,建立了符合条件的激光晶体热模型.考虑晶体侧面的热对流,运用MATLAB和FORTRAN软件,通过有限差分法求解各向异性介质热传导方程,得到了该晶体的温度场分布、端面热形变分布和不同泵浦功率下的热焦距.结果表明:在泵浦功率为14 W时,泵浦面最高温度达272.8℃、最大形变为0.48μm,光斑附近的热焦距为4.8 cm.
Based on the features of LD end-pumped Yb∶KGW laser crystal,the thermal model was established.Considering the convective heat transfer on the side faces,the temperature distribution,pumped-face distortion and thermal focal length under different pump power were obtained by solving anisotropy heat conductive equation through finite difference method.Under the pump power of 14 W,the highest temperature located at the center of the pumped face is 272.8 ℃,the highest distortion is 0.48 μm,and the thermal lens focal length at the pump spot is 4.8 cm.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2011年第1期78-82,共5页
Acta Photonica Sinica
基金
山东省科技攻关计划基金(No.2010GGX10113)
济南市高校自主创新计划基金(No.201004007)
山东省自然科学基金(No.Y2008F10)资助
