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High-speed modal decomposition of mode instabilities in high-power fiber lasers |
Optics Letters, Vol. 36, Issue 23, pp. 4572-4574 (2011)
http://dx.doi.org/10.1364/OL.36.004572
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Abstract
A high-speed mode analysis technique is required to gain fundamental understanding of mode instabilities in high-power fiber laser systems. In this work a technique, purely based on the intensity profile of the beam, is demonstrated to be ideally suited to analyze fiber laser dynamics. This technique, together with a high-speed camera, has been applied to the study of the temporal dynamics of mode instabilities at high average powers with up to 20,000 frames per second. These measurements confirm that energy transfer between the fluctuating transversal modes takes place in millisecond-time-scale.
© 2011 Optical Society of America
OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(140.3510) Lasers and laser optics : Lasers, fiber
(060.3510) Fiber optics and optical communications : Lasers, fiber
ToC Category:
Fiber Optics and Optical Communications
History
Original Manuscript: September 15, 2011
Revised Manuscript: October 17, 2011
Manuscript Accepted: October 17, 2011
Published: November 25, 2011
Citation
Fabian Stutzki, Hans-Jürgen Otto, Florian Jansen, Christian Gaida, Cesar Jauregui, Jens Limpert, and Andreas Tünnermann, "High-speed modal decomposition of mode instabilities in high-power fiber lasers," Opt. Lett. 36, 4572-4574 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-23-4572
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