激光线宽
材料科学
光学
光纤激光器
布里渊散射
双包层光纤
纤维
激光器
保偏光纤
光电子学
色散位移光纤
光纤
光纤传感器
物理
复合材料
作者
Wei Li,Pengfei Ma,Yisha Chen,Shuai Ren,Yu Deng,Wei Liu,Zhiyong Pan,Zilun Chen,Pu Zhou,Lei Si
出处
期刊:Optics Express
[The Optical Society]
日期:2023-02-10
卷期号:31 (5): 8855-8855
被引量:5
摘要
In this manuscript, a narrow linewidth fiber amplifier based on confined-doped fiber is established, and the power scaling and beam quality maintaining capabilities of this amplifier are investigated. Benefitted from the large mode area of the confined-doped fiber and precisely controlling the Yb-doped region in the fiber core, the stimulated Brillouin scattering (SBS) and transverse mode instability (TMI) effects are effectively balanced. As a result, a 1007 W signal laser with just 1.28 GHz linewidth is obtained by combining the advantages of confined-doped fiber, near-rectangular spectral injection, and 915 nm pump manner. As far as we know, this result is the first beyond kilowatt-level demonstration of all-fiber lasers with GHz-level linewidth, which could provide a well reference for simultaneously controlling spectral linewidth, suppressing the SBS and TMI effects in high-power, narrow-linewidth fiber lasers.
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