| 高功率双包层光纤激光器热效应及功率极限 |
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| 引用本文： | 薛冬,周军,楼祺洪,帅敏东.高功率双包层光纤激光器热效应及功率极限[J].强激光与粒子束,2009,21(7). |
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| 作者姓名： | 薛冬 周军 楼祺洪 帅敏东 |
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| 作者单位： | Xue Dong1, Zhou Jun2, Lou Qihong2, Shuai Mindong1 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 基于稳态热传导方程，对高功率双包层光纤激光器的热效应进行了研究，分析了光纤尺寸、冷却条件、泵浦功率等因素对光纤温度场的影响。对给定参数的光纤，给出了理论功率极限。指出对于目前常用双包层光纤激光器，最大输出功率主要受各外包层材料的熔点和非线性效应限制，从而可以确定功率限制的瓶颈所在，提出有效的改进方案,如减弱或消除线性效应、提高外包层的耐热能及改进制冷方案。
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| 关 键 词： | 双包层光纤激光器 温度场 热效应 功率极限 |
| 收稿时间： | 1900-01-01; |
Thermal effect and power limit in high power double-clad fiber laser |
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| Xue Dong,Zhou Jun,Lou Qihong,Shuai Mindong.Thermal effect and power limit in high power double-clad fiber laser[J].High Power Laser and Particle Beams,2009,21(7). |
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| Authors: | Xue Dong Zhou Jun Lou Qihong Shuai Mindong |
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| Institution: | 1. Physics and Electronic Engineering Department, Zaozhuang University, Zaozhuang 277100, China; 2. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, P. O. Box 800-211, Shanghai 201800, China |
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| Abstract: | According to the steady-state heat conduction equation,the temperature distribution in the high power double-clad fiber laser(DCFL) has been analyzed.The influence of fiber size,cooling-boundary condition and pump power on temperature distribution are discussed based on the analytic solution.The theoretical maximum output power with given parameters is obtained.The maximum power of a commonly used DCFL is limited by the melting point of the material and the non-linear effect.The bottlenecks can be easily determined so as to come up with effective improved shemes,such as weakening or eliminating the linear effect,raising the heat-resistant of outer-clad and improving the cooling method. |
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| Keywords: | double-clad fiber laser temperature field thermal effect power limit |
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