Open Access102 W monolithic single frequency Tm-doped fiber MOPA
Author(s) -
Xiong Wang,
Pu Zhang,
Xiaolin Wang,
Xiao Hu,
Si Liu
Publication year - 2013
Publication title -
optics express
Language(s) - Polish
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.032386
Subject(s) - materials science , optics , fiber laser , amplifier , lasing threshold , optoelectronics , dispersion shifted fiber , laser , slope efficiency , fiber , polarization maintaining optical fiber , wavelength , fiber optic sensor , physics , cmos , composite material
We demonstrate a high power all-fiber single frequency Tm-doped fiber amplifier. The maximum output power reached 102 W and the central wavelength was 1.97 μm. The single frequency laser signal from a seed laser was amplified based on a monolithic master oscillator power amplifier (MOPA) configuration. The slope efficiency was about 50% against the absorbed pump power. Neither parasitic lasing nor nonlinear effect was observed in the monolithic fiber amplifier. The SBS threshold of the single frequency Tm-doped fiber amplifier was analyzed and estimated. The output power is not limited by the SBS threshold and could be further improved by increasing the pump power. To the best of our knowledge, this is the first demonstration of average power exceeding 100 W from monolithic all-fiber laser near 2 μm wavelength.