High-power tandem pumped fiber amplifier with an output power of 2.9 kW |
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Authors: | Wirth Christian Schmidt Oliver Kliner Andrea Schreiber Thomas Eberhardt Ramona Tünnermann Andreas |
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Affiliation: | Fraunhofer Institute for Applied Optics and Precision Engineering, Albert-Einstein Strasse 7, 07745 Jena, Germany. |
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Abstract: | We report on a high power fiber amplifier tandem pumped by an industrial style thin-disk laser. An output power of 1 kW and a very good slope efficiency of 73% have been obtained for a state-of-the-art photonic crystal fiber originally designed for short-pulse amplification. We also compare this result to an experiment, where a power of 2.9 kW could be obtained from a step-index large-mode-area fiber with the same slope efficiency. |
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