Open AccessExperimental observations of the threshold-like onset of mode instabilities in high power fiber amplifiers
Author(s) -
Tino Eidam,
Christian Wirth,
César Jáuregui,
Fabian Stutzki,
Florian Jansen,
Hans-Jürgen Otto,
O. Schmidt,
Sabu Thomas,
Jens Limpert,
Andreas Tünnermann
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.19.013218
Subject(s) - amplifier , optics , mode (computer interface) , power (physics) , single mode optical fiber , physics , transverse plane , fiber amplifier , mode volume , fiber , materials science , optical fiber , polarization maintaining optical fiber , fiber laser , optoelectronics , fiber optic sensor , computer science , engineering , structural engineering , cmos , quantum mechanics , composite material , operating system
We report on the observation and experimental characterization of a threshold-like onset of mode instabilities, i.e. an apparently random relative power content change of different transverse modes, occurring in originally single-mode high-power fiber amplifiers. Although the physical origin of this effect is not yet fully understood, we discuss possible explanations. Accordingly, several solutions are proposed in this paper to raise the threshold of this effect.