| 基于侧面热对流的LD泵浦Yb:KGd(WO4)2热透镜效应研究 |
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| 引用本文： | 牛荣莲,刘成成,刘莹,刘杰,秦连杰.基于侧面热对流的LD泵浦Yb:KGd(WO4)2热透镜效应研究[J].光子学报,2011,40(1):78-82. |
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| 作者姓名： | 牛荣莲 刘成成 刘莹 刘杰 秦连杰 |
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| 作者单位： | 1. 山东师范大学,物理与电子科学学院,济南,250014
2. 烟台大学,环境与材料工程学院,山东,烟台,264005 |
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| 基金项目： | 山东省科技攻关计划;山东省自然科学基金;济南市高校自主创新计划 |
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| 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...
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| 关 键 词： | 固体激光器 Yb:KGW晶体 有限差分法 热透镜效应 |
| 收稿时间： | 2010-07-20 |
| 修稿时间： | 2010-10-16 |
Thermal Lensing Effect of Diode-pumped Yb:KGd(WO4)2 Based on Convective Heat-transfer on the Side Surface |
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| NIU Rong-lian,LIU Cheng-cheng,LIU Ying,LIU Jie,QIN Lian-jie.Thermal Lensing Effect of Diode-pumped Yb:KGd(WO4)2 Based on Convective Heat-transfer on the Side Surface[J].Acta Photonica Sinica,2011,40(1):78-82. |
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| Authors: | NIU Rong-lian LIU Cheng-cheng LIU Ying LIU Jie QIN Lian-jie |
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| Abstract: | 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 14W, the highest temperature located at the center of the pumped face was 272.8℃﹑the highest distortion was 0.48μm, and the thermal lens focal length at the pump spot was 4.8cm. |
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| Keywords: | Solid-state lasers Yb:KGW crystal Finite difference Method Thermal lensing effects |
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