Open Access108 kW spectral beam combination of eight all-fiber superfluorescent sources and their dispersion compensation
Author(s) -
Yi Zheng,
Yifeng Yang,
Jianhua Wang,
Man Hu,
Guangbo Liu,
Xiangyong Zhao,
Xiaolong Chen,
Kai Li,
Chun Zhao,
Bing He,
Jun Zhou
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.012063
Subject(s) - optics , materials science , dispersion shifted fiber , diffraction grating , amplifier , fiber bragg grating , polarization maintaining optical fiber , beam (structure) , grating , wavelength , optical fiber , optoelectronics , fiber optic sensor , physics , cmos
We report an 8-element spectral beam combination of Yb-doped all fiber superfluorescent sources around 1070 nm wavelength. Each source consists of a 60 mW front-end and a 1.5 kW three-stage fiber amplifier chain. The eight output beamlets are spectrally combined using a home-made polarization-independent multilayer dielectric reflective diffraction grating. 10.8 kW output power is achieved with an efficiency of 94%. Besides, both theoretical and experimental studies of dual grating dispersion compensation scheme have been performed, which is proved to be a prospective way for high brightness spectral beam combination.