Open AccessEnergy scaling of mode-locked fiber lasers with chirally-coupled core fiber
Author(s) -
Simon Lefrançois,
T. Sosnowski,
ChiHung Liu,
Almantas Galvanauskas,
Frank W. Wise
Publication year - 2011
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.19.003464
Subject(s) - optics , fiber laser , mode volume , core (optical fiber) , materials science , dispersion shifted fiber , polarization maintaining optical fiber , fiber , graded index fiber , laser , single mode optical fiber , optical fiber , physics , fiber optic sensor , composite material
We report a mode-locked dissipative soliton laser based on large-mode-area chirally-coupled-core Yb-doped fiber. This demonstrates scaling of a fiber oscillator to large mode area in a format that directly holds the lowest-order mode and that is also compatible with standard fiber integration. With an all-normal-dispersion cavity design, chirped pulse energies above 40 nJ are obtained with dechirped durations below 200 fs. Using a shorter fiber, dechirped durations close to 100 fs are achieved at pump-limited energies. The achievement of correct energy scaling is evidence of single-transverse-mode operation, which is confirmed by beam-quality and spectral-interference measurements.