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Fibers and fiber-optic components for high power fiber lasers

: Zimer, H.; Kozak, M.; Liem, A.; Flohrer, F.; Doerfel, F.; Riedel, P.; Linke, S.; Horley, R.; Ghiringhelli, F.; Demoulins, S.; Zervas, M.; Kirchhof, J.; Unger, S.; Jetschke, S.; Peschel, T.; Schreiber, T.


Dawson, J.W. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Fiber Lasers VIII: Technology, Systems, and Applications : 22.-26.1.2011, San Francisco, California, USA, SPIE Photonics West
Bellingham, WA: SPIE, 2011 (Proceedings of SPIE 7914)
ISBN: 978-0-8194-8451-2
Paper 791414
Conference "Fiber Lasers - Technology, Systems, and Applications" <8, 2011, San Francisco/Calif.>
Conference Paper
Fraunhofer IOF ()
high power fiber lasers; photodarkening; fiber core compositions; fiber-optic components; nonlinearities

The major challenge in the development of monolithic kW class CW fiber lasers is the efficient conversion of pump photons into a high brightness laser beam under the constraints of heat management, long term stability and nonlinearities. This article reviews the interaction of some fiber related aspects as e.g. fiber core composition, photodarkening and modality, as well as their influence on system complexity and power scalability. Recent work on active fibers, pump couplers, mode field adaptors and other fiber-optic components will be presented.