20 February 2018 Inhibited-coupling HC-PCF based beam-delivery-system for high power green industrial lasers
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Abstract
We report on an ultra-low loss Hollow-Core Photonic Crystal Fiber (HC-PCF) beam delivery system (GLO-GreenBDS) for high power ultra-short pulse lasers operating in the green spectral range (including 515 nm and 532 nm). The GLOBDS- Green combines ease-of-use, high laser-coupling efficiency, robustness and industrial compatible cabling. It comprises a pre-aligned laser-injection head, a sheath-cable protected HC-PCF and a modular fiber-output head. It enables fiber-core gas loading and evacuation in a hermetic fashion. A 5 m long GLO-BDS were demonstrated for a green short pulse laser with a transmission coefficient larger than 80%, and a laser output profile close to single-mode (M2 <1.3).
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M. Chafer, M. Chafer, A. Gorse, A. Gorse, B. Beaudou, B. Beaudou, Q. Lekiefs, Q. Lekiefs, M. Maurel, M. Maurel, B. Debord, B. Debord, F. Gérôme, F. Gérôme, F. Benabid, F. Benabid, } "Inhibited-coupling HC-PCF based beam-delivery-system for high power green industrial lasers", Proc. SPIE 10513, Components and Packaging for Laser Systems IV, 1051304 (20 February 2018); doi: 10.1117/12.2290597; https://doi.org/10.1117/12.2290597
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