title: 10.8 kW spectral beam combination of eight all-fiber superfluorescent sources and their dispersion compensation.
abstract: 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.
authors.forename: Ye
authors.initials: Y
authors.lastname: Zheng
authors.forename: Yifeng
authors.initials: Y
authors.lastname: Yang
authors.forename: Jianhua
authors.initials: J
authors.lastname: Wang
authors.forename: Man
authors.initials: M
authors.lastname: Hu
authors.forename: Guangbo
authors.initials: G
authors.lastname: Liu
authors.forename: Xiang
authors.initials: X
authors.lastname: Zhao
authors.forename: Xiaolong
authors.initials: X
authors.lastname: Chen
authors.forename: Kai
authors.initials: K
authors.lastname: Liu
authors.forename: Chun
authors.initials: C
authors.lastname: Zhao
authors.forename: Bing
authors.initials: B
authors.lastname: He
authors.forename: Jun
authors.initials: J
authors.lastname: Zhou