Open AccessTEM_00 mode content of a two stage single-frequency Yb-doped PCF MOPA with 246 W of output power
Author(s) -
Malte Karow,
Chandrajit Basu,
Dietmar Kracht,
Jörg Neumann,
P. Weßels
Publication year - 2012
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.20.005319
Subject(s) - optics , materials science , laser beam quality , amplifier , fiber laser , laser , photonic crystal fiber , single mode optical fiber , polarization (electrochemistry) , mode field diameter , optoelectronics , optical fiber , polarization maintaining optical fiber , physics , laser beams , fiber optic sensor , chemistry , cmos
Gravitational wave detectors require linearly polarized single-frequency laser sources with a high fractional TEM 00 mode content. We investigated the modal decomposition of a polarization maintaining photonic crystal fiber with a mode field diameter of 29 µm, operating in a single-frequency master-oscillator power-amplifier scheme, with respect to the TEM nm modes. Low degradation of the beam quality with increasing pump power could be observed, while a maximum power in the TEM 00 mode of 203 W was achieved.