【作者】 陈吉欣； 隋展； 陈福深； 李明中； 王建军；

【Author】 CHEN Ji-xin~(1.2) SUI Zhan~2 CHEN Fu-shen~1 LI Ming-zhong~2 WANG Jian-jun~2 ~1Key Laboratory of Optical Fiber,School of Communication and Information Engineering,University of Electronic Science and Technology of China,Chengdu,Sichuan 610054,China ~2Research Center of Laser Fusion.China Academy of Engineering Physics,Mianyang 621900,China

【机构】 电子科技大学通信与信息工程学院光纤重点实验室； 中国工程物理研究院 激光聚变研究中心；

【摘要】 端面抽运是双包层光纤激光器的一种常见的抽运方式。从速率方程和热传导方程出发,数值分析了端面抽运方式下双包层光纤激光器的功率和温度特性。结果表明,在三种抽运方式中,反向抽运时输出激光功率最高,双向抽运时光纤中的温度分布最平坦。当光纤激光器无严重的热效应时,采用反向抽运可以得到较高的输出激光功率；当激光器工作在高功率时,采用双向抽运可以有效地减小热效应,这时,为了得到较高的输出激光功率,可以适当提高反向抽运光的功率。所得的结果对设计端面抽运的双包层光纤激光器提供了理论依据。更多还原

【Abstract】 End pumping is a simple pumping method in double clad fiber laser.According to rate and heat conduction equations,the distribution of power and temperature in end pumped Yb^3-doped double clad fiber laser is studied.It is shown that the maximum output power can be obtained for backward pump,the distribution of temperature in fiber is the flattest for bidirectional pump,when no severe thermal effect happens,higher laser power can be obtained for backward pump,when fiber laser works at high power level,thermal effects can be reduced for birectinal pump,and backward pump power can be properly increased to acquire higher laser power.The results provide a good reference for designing end pumped high power double clad fiber laser.更多还原