Open Access1-kilowatt CW all-fiber laser oscillator pumped with wavelength-beam-combined diode stacks
Author(s) -
Yi Xiao,
François Brunet,
M. Kanskar,
Mathieu Faucher,
Alexandre Wetter,
Nigel Holehouse
Publication year - 2012
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.003296
Subject(s) - materials science , optics , fiber laser , laser beam quality , optoelectronics , laser , slope efficiency , laser power scaling , cladding (metalworking) , laser diode , dispersion shifted fiber , optical fiber , diode , wavelength , fiber optic sensor , laser beams , physics , metallurgy
We have demonstrated a monolithic cladding-pumped ytterbium-doped single all-fiber laser oscillator generating 1 kW of CW signal power at 1080 nm with 71% slope efficiency and near diffraction-limited beam quality. Fiber components were highly integrated on "spliceless" passive fibers to promote laser efficiency and alleviate non-linear effects. The laser was pumped through a 7:1 pump combiner with seven 200-W 91x nm fiber-pigtailed wavelength-beam-combined diode-stack modules. The signal power of such a single all-fiber laser oscillator showed no evidence of roll-over, and the highest output was limited only by available pump power.