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Random distributed feedback fiber laser at 2.1 mu m

机译:2.1微米的随机分布反馈光纤激光器

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We demonstrate a random distributed feedback fiber laser at 2.1 mu m. A high-power pulsed Tm-doped fiber laser operating at 1.94 mu m with a temporal duty ratio of 30% was employed as a pump laser to increase the equivalent incident pump power. A piece of 150 m highly GeO2- doped silica fiber that provides a strong Raman gain and random distributed feedbacks was used to act as the gain medium. The maximum output power reached 0.5 W with the optical efficiency of 9%, which could be further improved by more pump power and optimized fiber length. To the best of our knowledge, this is the first demonstration of random distributed feedback fiber laser at 2 mu m band based on Raman gain. (C) 2016 Optical Society of America
机译:我们展示了2.1微米的随机分布反馈光纤激光器。使用工作在1.94微米,时间占空比为30%的高功率脉冲掺Tm光纤激光器作为泵浦激光器,以增加等效入射泵浦功率。一条150 m高度掺杂GeO2的石英纤维提供了很强的拉曼增益和随机分布的反馈,被用作增益介质。最大输出功率达到0.5 W,光效率为9%,这可以通过增加泵浦功率和优化光纤长度来进一步提高。据我们所知,这是第一个基于拉曼增益的2微米波段随机分布反馈光纤激光器的演示。 (C)2016美国眼镜学会

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