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Limpert, J.; Schreiber, T.; Nolte, S.; Zellmer, H.; Tunnermann, A.; Iliew, R.; Lederer, F.; Broeng, J.; Vienne, G.; Peterson, A.; Jakobsen, C.
Conference on Lasers and Electro-Optics, 2003. CLEO '03, 04/2003, Letnik: 11, Številka: 7Conference Proceeding, Journal Article
We report on a 2.3 m long air-clad ytterbium-doped large-mode-area photonic crystal fiber laser generating up to 80 W output power with a slope efficiency of 78%. Single transverse mode operation is achieved with a mode-field area of 350 /spl mu/m/sup 2/. No thermo-optical limitations are observed at the extracted /spl sim/35 W/m, therefore such fibers allow scaling to even higher powers.
