title: High power supercontinuum generation in a nonlinear ytterbium-doped fiber amplifier.
abstract: High power supercontinuum generation with 70 W average output power in a nonlinear ytterbium-doped fiber amplifier is demonstrated using all-normal dispersion, all-fiber master oscillator power amplifier configuration. The supercontinuum covers from 1064 nm to beyond 1700 nm with spectral flatness better than 12 dB and 67.3% optical to optical conversion efficiency. The almost uniform spectral power density across the whole continuum is more than 70 mW/nm and the nanosecond bursts output have an effective peak power of 82.7 kW.
authors.affiliation: College of Optoelectronic Science and Engineering, National University of Defense Technology, Chang Sha, China.
authors.forename: Rui
authors.initials: R
authors.lastname: Song
authors.forename: Jing
authors.initials: J
authors.lastname: Hou
authors.forename: Shengping
authors.initials: S
authors.lastname: Chen
authors.forename: Weiqiang
authors.initials: W
authors.lastname: Yang
authors.forename: Qisheng
authors.initials: Q
authors.lastname: Lu