| LD端面泵浦矩形Nd:YVO_4晶体的热效应研究 |
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| 引用本文： | 毕学进,周壮,董邵然,乔焱,崔伟,李健.LD端面泵浦矩形Nd:YVO_4晶体的热效应研究[J].光学技术,2012(6):725-728. |
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| 作者姓名： | 毕学进 周壮 董邵然 乔焱 崔伟 李健 |
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| 作者单位： | 山东师范大学物理与电子科学学院光学与光子器件实验室 |
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| 基金项目： | 国家自然科学基金(61078032) |
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| 摘 要： | 建立了矩形激光晶体的热传导模型。通过充分考虑晶体侧面与冷却液之间的对流传热,以及晶体端面与外界的热传导,建立了更为合理的边界条件。利用有限元差分法求解泊松方程,得到激光晶体内温度和温度场分布。研究结果表明,在考虑晶体的侧面对流和端面导热的情况下,得出了更符合实际的晶体温度场分布,计算的热焦距与实验测量结果更为吻合。
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| 关 键 词： | 端面泵浦 Poisson方程 对流传热 温度场 热效应 |
Study of thermal effect of LD end-pumped with rectangular crystalloid of Nd:YVO4 |
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| BI Xuejin,ZHOU Zhuang,DONG Shaoran,QIAO Yan,CUI Wei,LI Jian.Study of thermal effect of LD end-pumped with rectangular crystalloid of Nd:YVO4[J].Optical Technique,2012(6):725-728. |
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| Authors: | BI Xuejin ZHOU Zhuang DONG Shaoran QIAO Yan CUI Wei LI Jian |
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| Institution: | (Key laboratory of optics and photonic device,College of Physics and Electronics, Shandong Normal University,Jinan 250014,Shandong,China) |
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| Abstract: | The thermal conduct model of rectangular laser crystal is established.Considering the heat convection between the side surface of the crystal with the cool water as well as the convective heat-transfer about the pumped surface,the more rational boundary conditions are established.Using finite element difference method and Poisson equation,temperature field in the crystal is obtained.The results show that the convective heat-transfer about the pumped surface and the side surface of the crystal can lead to more actual temperature field,the focal length is more coincident with the experiment. |
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| Keywords: | end pumped Poisson equation convective heat-transfer temperature field thermal effect |
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