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20 February 2015 Demonstration of >5kW emissions with good beam quality from two different 7:1 all-glass fiber coupler-types
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Abstract
We report on two low-loss 7:1 single-mode to multi-mode fiber coupler-designs generating more than 5 kW of output power. These all-glass fiber-optical devices have the objective to keep the brightness at its theoretical maximum and the heat load at its technical minimum. To the best of our knowledge, regarding all-fiber geometrical combined power generation, beam quality and heat stability, the presented results had never been reported before.
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M. Plötner, T. Eschrich, O. de Vries, J. Kobelke, S. Unger, M. Jäger, T. Schreiber, H. Bartelt, R. Eberhardt, and A. Tünnermann "Demonstration of >5kW emissions with good beam quality from two different 7:1 all-glass fiber coupler-types", Proc. SPIE 9346, Components and Packaging for Laser Systems, 93460W (20 February 2015); https://doi.org/10.1117/12.2077580
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