6.8 kW peak power quasi-continuous wave tandem-pumped Ytterbium amplifier at 1071nm

F. Beier; Maximilian Strecker; J. Nold; N. Haarlammert; T. Schreiber; R. Eberhardt; A. Tünnermann

doi:10.1117/12.2076599

4 March 2015 6.8 kW peak power quasi-continuous wave tandem-pumped Ytterbium amplifier at 1071nm

F. Beier, Maximilian Strecker, J. Nold, N. Haarlammert, T. Schreiber, R. Eberhardt, A. Tünnermann

Proceedings Volume 9344, Fiber Lasers XII: Technology, Systems, and Applications; 93441H (2015) https://doi.org/10.1117/12.2076599
Event: SPIE LASE, 2015, San Francisco, California, United States

Abstract

We demonstrate a quasi-continuous wave laser amplifier with a peak output power of 6.8 kW pumped by an industrial thin-disk laser. A high slope efficiency of 84 % has been obtained within a duty cycle of 10 % at a signal wavelength of 1071 nm. For cw-pumping we measured a maximum output power of 985W. The amplifier fiber had a step index profile with a core diameter of 45μm and a pump core diameter of 120μm. A signal to ASE peak ratio of 48 dB could be determined.

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F. Beier, Maximilian Strecker, J. Nold, N. Haarlammert, T. Schreiber, R. Eberhardt, and A. Tünnermann "6.8 kW peak power quasi-continuous wave tandem-pumped Ytterbium amplifier at 1071nm", Proc. SPIE 9344, Fiber Lasers XII: Technology, Systems, and Applications, 93441H (4 March 2015); https://doi.org/10.1117/12.2076599

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