The temporal behavior of mode instabilities is investigated. These results support the thermal origin of this effect, and, in particular, the creation of a thermally-induced long period grating by the beating of two transversal modes.
© 2012 OSA
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.2400) Fiber optics and optical communications : Fiber properties
(140.6810) Lasers and laser optics : Thermal effects
H. Otto, C. Jauregui, T. Eidam, F. Stutzki, F. Jansen, J. Limpert, and A. Tünnermann, "Dynamics and Origin of Mode Instabilities in High Power Fiber Laser Amplifiers," in Conference on Lasers and Electro-Optics 2012, OSA Technical Digest (online) (Optical Society of America, 2012), paper CF2N.7.
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