Open Access210 W single-frequency, single-polarization, thulium-doped all-fiber MOPA
Author(s) -
Jiang Liu,
Hongxing Shi,
Kun Liu,
Yanbing Hou,
Pu Wang
Publication year - 2014
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.22.013572
Subject(s) - brillouin scattering , materials science , optics , thulium , fiber laser , polarization maintaining optical fiber , polarization (electrochemistry) , extinction ratio , amplifier , laser , wavelength , optoelectronics , optical fiber , doping , fiber optic sensor , physics , chemistry , cmos
A high-power single-frequency, single-polarization, thulium-doped all-fiber master-oscillator power-amplifier (MOPA) is demonstrated by using all-polarization-maintaining (all-PM) thulium-doped fiber and all-PM-fiber components. The MOPA yielded 210 W of single-frequency, linear-polarized laser output at central wavelength of 2000.9 nm with a polarization extinction ratio (PER) of >17 dB. No indication of stimulated Brillouin scattering (SBS) could be observed at the highest output power level, and the output power was only currently limited by available pump power. To the best of our knowledge, this is the first demonstration of average output power exceeding 200 W from a single-frequency, single-polarization, thulium-doped all-fiber laser at 2 µm wavelength region.