All-fiber, narrow linewidth and linearly polarized fiber laser in a single-mode-multimode-single-mode cavity

作者:Jiang, Man; Xu, Haiyang; Zhou, Pu; Zhao, Guomin; Gu, Xijia*
来源:Applied Optics, 2016, 55(22): 6121-6124.
DOI:10.1364/AO.55.006121

摘要

We report the design of an all-fiber, linearly polarized Yb-doped fiber laser at 1064 nm with a narrow linewidth and high output power required by the master oscillator of the amplifier for high-power spectral beam combining. The laser has achieved linearly polarized output with a polarization extinction ratio of 23 dB, a narrow linewidth of <= 52 pm, and an output power of 32.7 W. Such performance was obtained by the cavity design that incorporated a wavelength-shifted PM fiber Bragg grating pair and single-mode-multimode-single-mode structure.