Abstract
We report on the effects of spectral shaping of the output coupler fiber Bragg grating (OC-FBG) in a Yb-doped fiber laser on the laser emission spectrum for the purpose of inhabiting stimulated Raman scattering (SRS). The lasers with four different OC-FBGs were built and characterized. We found that the laser with a multiple reflection peak chirped-moiré OC-FBG produced a broad laser emission linewidth, which, in turn, led to about 100 times lower the SRS emission as compared with the laser with a 0.19 nm Gaussian-shaped OC-FBG. A nearly flat-top laser output spectrum was obtained from the lasers with a triangle-shaped and chirped-moiré OC-FBG, respectively.
© 2017 Optical Society of America
Full Article | PDF ArticleMore Like This
Tenglong Li, Weiwei Ke, Yi Ma, Yinhong Sun, and Qingsong Gao
J. Opt. Soc. Am. B 36(6) 1457-1465 (2019)
Meng Wang, Yujing Zhang, Zefeng Wang, Junjie Sun, Jianqiu Cao, Jinyong Leng, Xijia Gu, and Xiaojun Xu
Opt. Express 25(2) 1529-1534 (2017)
Song Zhang, Wanru Zhang, Man Jiang, Wei Liu, Pengfei Ma, Can Li, Rongtao Su, Pu Zhou, and Zongfu Jiang
Appl. Opt. 60(20) 5984-5989 (2021)