Shamir Yariv, Glick Yaakov, Aviel Matitya, Attias Avital, Pearl Shaul
Opt Lett. 2018 Feb 15;43(4):711-714. doi: 10.1364/OL.43.000711.
We report a strictly all-fiber clad pumped Raman fiber laser with a CW power of 250 W. To the best of our knowledge, this is the highest power Raman fiber laser demonstrated in any configuration allowing brightness enhancement. In addition, this is the first report of a Raman clad pumped all-fiber laser. The brightness of the pump source was enhanced by a factor of ∼3.8. This result was achieved by the design of a novel triple-clad fiber, with tight pump power inner confining clad that both maximized the Raman gain and inhibited the second Stokes radiation. We discuss power-increase effects on the beam quality, efficiency, and brightness enhancement.
我们报道了一种连续波功率为250 W的全光纤包层泵浦拉曼光纤激光器。据我们所知，这是在任何允许亮度增强的配置中所展示的最高功率拉曼光纤激光器。此外，这是关于包层泵浦全光纤拉曼激光器的首次报道。泵浦源的亮度提高了约3.8倍。这一结果是通过设计一种新型的三包层光纤实现的，该光纤具有紧密的泵浦功率内限制包层，既能最大化拉曼增益，又能抑制二次斯托克斯辐射。我们讨论了功率增加对光束质量、效率和亮度增强的影响。
