Three-dimensions thermal model of a high-power diode laser bar

Wu Di-Hai; Zah Chung-En; Liu Xingsheng

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Three-dimensions thermal model of a high-power diode laser bar

机译：高功率二极管激光棒的三维热模型

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An analytical, three-dimensional, steady-state thermal model of a high-power diode laser bar is presented in this paper. The heat spreading angle in a laser bar heat sink, subjected to several convective conditions on the bottom-side, was calculated with this model. Thermal design curves for the heat sink and submount are also presented. Special discussion is presented for two kinds of our conduction-cooled laser bars. Finite element simulation and experimental results based on the wavelength shift method are compared with this analytical solution. The familiar 45 degrees angle in thermal design for a commercial hard solder conduction-cooled laser bar was found to lead to a 12% increase in thermal resistance relative to a free lateral diffusion heat sink. (C) 2018 Optical Society of America

机译：本文提出了高功率二极管激光棒的分析，三维稳态热模型。使用该模型计算激光棒散热器中的散热角在底侧进行若干对流条件。还提供了散热器和基座的热设计曲线。为两种导电冷却激光棒提供了特殊讨论。基于波长换档方法的有限元模拟和实验结果与该分析解决方案进行了比较。发现用于商用硬焊接冷却激光的激光棒的热设计的熟悉的45度角，导致相对于自由横向扩散散热器的热阻增加12％。（c）2018年光学学会

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《Applied optics》 |2018年第33期|共9页
作者
Wu Di-Hai; Zah Chung-En; Liu Xingsheng;
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作者单位

Chinese Acad Sci Xian Inst Opt &

Precis Mech State Key Lab Transient Opt &

Photon 17 Xinxi Rd Xian 710119 Shaanxi Peoples R China;

Focuslight Technol Inc 56 Zhangba 6th Rd Xian 710077 Shaanxi Peoples R China;

Chinese Acad Sci Xian Inst Opt &

Precis Mech State Key Lab Transient Opt &

Photon 17 Xinxi Rd Xian 710119 Shaanxi Peoples R China;

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Three-dimensions thermal model of a high-power diode laser bar

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