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端面泵浦掺Yb³⁺双包层光纤激光器

End-pumped Yb³⁺ doped double clad fiber laser

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【Author】 CHEN Ji-xin~(1,2),SUI Zhan~2,CHEN Fu-shen~1,WANG Feng-rui~2,LI Ming-zhong~2,WANG Jian-jun~2,LIU Zhi-qiang~3,LUO Yi-ming~2(1.Key Lab of Optical Fiber,School of Communication and Information Engineering,UESTC, Chengdu 610054,China;2.Research Center of Laser Fusion,CAEP,Mianyang 621900,China;3.Institute of Applied Electronics,CAEP,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；中国工程物理研究院应用电子学研究所；中国工程物理研究院激光聚变研究中心成都610054；四川绵阳621900；成都610054；

【摘要】从双包层光纤激光器的速率方程出发,得到了光纤中泵浦光与激光的功率分布、输出功率与泵浦功率的关系、腔镜反射率及光纤长度对输出功率的影响。研究结果表明:输出激光功率与光纤长度及后腔镜反射率有很强的依赖关系,存在一个输出功率最大的最佳光纤长度。后腔镜反射率越大,输出激光功率越小;当光纤长度较短时,在输出端放置反射镜使泵浦光高反射,可以提高输出功率和效率。通过对端面泵浦掺Y b3+双包层光纤激光器进行理论分析和实验研究,得到输出激光的中心波长为1 088.3 nm,斜率效率为33.7%,最大输出功率为1.75 W。更多还原

【Abstract】 Theoretical analysis and experiment of endpumped Yb³⁺ doped double-clad fiber laser are presented in this paper.Based on rate equations,the distribution of pump power and laser power in the fiber,the effect of fiber length and reflectivity of cavity minor on output power are studied.The maximum output laser power can be obtained with the optimum fiber length and fiber end as output coupling.That is,the higher the reflectivity of rear-cavity mirror is,the lower the laser output power will be.For short fiber,the output laser power and slope efficiency can be improved when a reflective mirror is set at output end to reflect the pump light.In the experiment,the laser with a central wavelength of 1088.3nm,the slope efficiency of 33.7% and the maximal output power of 1.75W were obtained.更多还原