LDA侧面泵浦薄片激光器的泵浦光和温度分布

刘全喜; 钟鸣

发光学报, 2010, 31 (6): 888, 网络出版: 2011-02-15

LDA侧面泵浦薄片激光器的泵浦光和温度分布

Study of the Pump and Temperature Distribution in Thin Disk Laser Side-pumped by LDA

论文大纲

刘全喜 ^*钟鸣

作者单位

西南技术物理研究所, 四川成都610041

摘要

建立了激光二极管阵列(LDA) 环绕侧面泵浦复合薄片激光器的数值模型, LDA的快轴垂直于薄片表面并被压缩。依据LDA 的输出光束特性, 考虑到介质与空气的对流热交换和材料热导率的温度相关性, 根据经典热传导方程, 运用有限单元法, 得出了薄片内的泵浦光和温度分布。分析了LDA个数、泵浦距离、吸收系数和光束发散角对薄片内泵浦光分布和吸收效率的影响规律, 讨论了温度与泵浦功率、换热系数、冷却液温度和时间的变化规律, 所得的有关规律与相关实验相符合。计算结果可为LDA泵浦固体激光器的结构优化设计和实验研究提供理论参考。

Abstract

A numerical model of the thin composite disk side-pumped by ring laser-diode arrays (LDA) is set up. LDA fast axis is upright to disk face and is compressed. Under considering the influence of temperature correlation of the thermal conductivity of the material and heat transfer coefficient between air and medium, based on the thermal conduction equations, the pump distribution and the transient distributions of temperature in the thin disk are calculated by a finite element analysis method. The influence disciplinarian of the number of LDA, the pump distance, the light divergence angle and the absorption coefficient of thin disk on pump distribution and absorption efficiency of thin disk are analyzed. The influence disciplinarian of the pump power, heat transfer coefficient, cooling fluid temperature and time on transient distributions of temperature in the thin disk are discussed. The theoretical results accord with interrelated experiment and provide theoretical reference for the design of solid laser pumped by LDA and experimental analysis.

参考文献

[1] . A brief history of high-power semiconductor lasers[J]. IEEE Sel. Top. Quant., 2000, 6(6): 1470-1477.

[2] . Diode-pumped solid-state lasers for inertial fusion energy[J]. J. Fusion Energy, 1998, 17(3): 213-217.

[3] . Laser properties of Er3+, Yb3+ co-doped erbium phosphate glass pumped by laser diode[J]. Chin. J. Lumin.(发光学报), 2002, 23(3): 238-242.

[4] . Active mirror amplifier for high-average power[J]. SPIE, 2001, 4270: 45-55.

[5] . Pump distribution in gain medium of laser-diode side-pumped disk laser[J]. Infrared and Laser Engineering (红外与激光工程), 2007, 36(4): 505-508.

[6] . Pump distribution in LD side-pumped disk laser[J]. High Power Laser and Particle Beams (强激光与粒子束), 2008, 20(8): 1243-1248.

[7] . 90 W continuous-wave diode edge-pumped microchip composite Yb∶Y3Al5O12 laser[J]. Appl. Phys. Lett., 2003, 83(20): 4086-4088.

[8] . Progress in the development of solid-state disk laser[J]. SPIE, 2004, 5332: 235-243.

[9] . A simple calculation method of diode pump light distribution in the YAG rod laser[J]. Appl. Laser (应用激光), 1999, 19(3): 123-125.

[10] . Finite element analysis of damage threshold of semiconductor irradiated by multiple laser[J]. Laser & Infrared (激光与红外), 2006, 36(8): 670-674.

[11] Wang Xucheng, Shao Min. The Basic Principles of Finite Element Method and Numerical Methods ［M］. Beijing： Tsinghua University Press, 1997.

[12] . Finite element analysis of thermal distortion of infrared CW laser reflectors[J]. High Power Laser and Particle Beams (强激光与粒子束), 2004, 16(8): 953-956.

[13] Koechner W. Solid-state Laser Engineering ［M］. Berlin: Springer, 1996.

[14] . Nonlinear thermal distortion in YAG rod amplifiers[J]. IEEE J. Quantum Electron., 1998, 34(12): 2383-2392.

刘全喜, 钟鸣. LDA侧面泵浦薄片激光器的泵浦光和温度分布[J]. 发光学报, 2010, 31(6): 888. LIU Quan-xi, ZHONG Ming. Study of the Pump and Temperature Distribution in Thin Disk Laser Side-pumped by LDA[J]. Chinese Journal of Luminescence, 2010, 31(6): 888.

LDA侧面泵浦薄片激光器的泵浦光和温度分布

关于本站 Cookie 的使用提示

全站搜索

LDA侧面泵浦薄片激光器的泵浦光和温度分布

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索