Title :
Mode instabilities in large-mode-area fiber amplifiers
Author :
T. Eidam;C. Jauregui;H.-J Otto;F. Jansen;F. Stutzki;J. Limpert;A. Tunnermann
Author_Institution :
Abbe Center of Photonics, Friedrich-Schiller-Univ. Jena, Jena, Germany
fDate :
5/1/2013 12:00:00 AM
Abstract :
The onset of mode instabilities is an effect occurring in high-average-power fiber lasers and amplifiers when their output average power exceeds a certain threshold value [1]. This effect is characterized by a sudden change of the output beam from an initially stable fundamental mode to a regime with more or less chaotic fluctuations between the fundamental mode and one or more higher-order modes (shown in Fig. 1). Mode instabilities occur in different fiber architectures and they can additionally be observed both in continuous wave and in pulsed operation. Only a few years after the first mention of this effect in the literature, it has become one of the most severe limitations for the further average-power scaling of fiber lasers and amplifiers.
Keywords :
"Optical fiber amplifiers","Optimized production technology","Laser modes","Fiber lasers","Fluctuations","Laser theory","Power lasers"
Conference_Titel :
Lasers and Electro-Optics Europe (CLEO EUROPE/IQEC), 2013 Conference on and International Quantum Electronics Conference
DOI :
10.1109/CLEOE-IQEC.2013.6801321