| 高功率环形激光二极管阵列重复脉冲抽运激光器中棒的瞬态温度分布 |
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| 引用本文： | 张申金,欧群飞,冯国英,李明中,朱海波,陈建国.高功率环形激光二极管阵列重复脉冲抽运激光器中棒的瞬态温度分布[J].强激光与粒子束,2004,16(2):145-148. |
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| 作者姓名： | 张申金 欧群飞 冯国英 李明中 朱海波 陈建国 |
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| 作者单位： | 1. 四川大学 电子信息学院，四川 成都 610064；2. 中国工程物理研究院 激光聚变研究中心，四川 绵阳 621900 |
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| 基金项目： | 国家自然科学基金委-中国工程物理研究院联合资助项目(10176019) |
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| 摘 要： | 采用光线追迹方法和有限元方法，对高功率环形激光二极管阵列（LDA）重复脉冲抽运Nd:YAG激光器中，棒的瞬态温度分布进行了详细的计算模拟，分析比较了不同抽运阶段、抽运频率及占空比的情况下棒内的瞬态温度分布。结果表明：高功率环形LDA重复脉冲抽运时，棒中心处温度随时间变化成锯齿形分布，棒内温度随抽运频率和占空比的增大而增大，最后温度随时间成周期性变化。
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| 关 键 词： | 高功率环形LDA 重复脉冲抽运 热效应 温度分布 有限元法 |
| 文章编号： | 1001-4322(2004)02-0145-04 |
| 收稿时间： | 2003/9/26 |
| 修稿时间： | 2003年9月26日 |
Analysis of transient temperature distribution in laser rod pumped by repetitively pulsed high-power ring-LDA |
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| ZHANG Shen-jin,OU Qun-fei,FENG Guo-ying,LI Ming-zhong,ZHU Hai-bo,CHEN Jian-guo.Analysis of transient temperature distribution in laser rod pumped by repetitively pulsed high-power ring-LDA[J].High Power Laser and Particle Beams,2004,16(2):145-148. |
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| Authors: | ZHANG Shen-jin OU Qun-fei FENG Guo-ying LI Ming-zhong ZHU Hai-bo CHEN Jian-guo |
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| Institution: | 1. College of Electronic Information, Sichuan University, Chengdu 610064,2. Research Center of Laser Fusion CAEP, P.O.Box 919-988,Mianyang 621900, China,China; |
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| Abstract: | The transient temperature distribution in the Nd:YAG laser rod repeatedly pulse-pumped by high power ring-LD array was simulated in detail by using ray tracing method and finite element method. The transient temperature distributions at different pump periods, pump frequencies and pump widths were analyzed and compared. The result indicated that when high power ring-LD array pumped repeatedly, the core temperature of the rod had sawtooth distribution,and the temperature of the rod rose as the pump frequency or pump width rose. At last the temperature had periodical distribution with time. |
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| Keywords: | High power ring-LD array Repeated pulse-pumping structure Thermal effect Temperature distribution Finite element method |
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