High-gain amplification in Yb:CaF2 crystals pumped by a high-brightness Yb-doped 976 nm fiber laser |
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| Authors: | G Machinet G Andriukaitis P Sévillano J Lhermite D Descamps A Pugžlys A Baltuška E Cormier |
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| Institution: | 1. Centre Lasers Intenses et Applications, Université de Bordeaux-CNRS-CEA, UMR 5107, 351 cours de la Libération, 33405, Talence, France
2. Photonics Institute, Vienna University of Technology, Gusshausstrasse 27-387, 1040, Vienna, Austria
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| Abstract: | We report on high single-pass gain in Yb:CaF2 crystal longitudinally pumped with a 40 W high-brightness fiber laser source based on an ytterbium-doped ultra-large core photonic crystal rod-type fiber operating at 976 nm. A single-pass small-signal gain of 3.2 has been achieved in a 6 % Yb-doped 10-mm-long CaF2 crystal at room temperature, outperforming any CW-diode-pumped scheme and paving the way towards very promising innovative lasers and amplifiers schemes merging the Yb-doped solid-state and fiber technologies. |
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