Recent progress in visible fluoride fiber lasers

Esrom Kifle; Pavel Loiko; Jonathan Demaimay; Thibaud Berthelot; Laurine Bodin; Franck Joulain; Florence Pau; Gilles Recoque; Thierry Georges; Patrice Camy

doi:10.1117/12.3023599

20 June 2024 Recent progress in visible fluoride fiber lasers

Esrom Kifle, Pavel Loiko, Jonathan Demaimay, Thibaud Berthelot, Laurine Bodin, Franck Joulain, Florence Pau, Gilles Recoque, Thierry Georges, Patrice Camy

Author Affiliations +

Proceedings Volume 13003, Fiber Lasers and Glass Photonics: Materials through Applications IV; 130030D (2024) https://doi.org/10.1117/12.3023599
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

We overview recent advances in visible single- and double-clad fluoride fiber lasers pumped by blue GaN laser diodes. The spectroscopic properties of ZBLAN glasses doped with Pr³⁺, Ho³⁺ and Dy³⁺ ions are revised. Power scalable efficient continuous-wave visible fluoride fiber lasers emitting in the green, yellow, red and deep-red spectral ranges are presented. Pumped by a single-emitter 6-W 443-nm GaN laser diode, a continuous-wave red double-clad Pr:ZBLAN fiber laser delivered 1.51 W at 634.5 nm with a slope efficiency of 31.0%, a laser threshold of 0.63 W and a spatially single-mode output (M² ~1.02). Employing a high-power fiber-coupled laser module, power scalability up to 4.61 W was achieved at the expense of a lower slope efficiency of 22.8% and an increased laser threshold of 1.74 W. Green Ho:ZBLAN (543 nm) and yellow Dy:ZBLAN (575 nm) fiber lasers with high-brightness core pumping at 450 nm are also reported delivering 100 mW-level output with slope efficiencies of 31.2% and 19.6%, respectively, operating on the fundamental mode. A numerical model to predict the visible laser performance is presented and guidelines for further engineering of visible fiber laser sources are given.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Esrom Kifle, Pavel Loiko, Jonathan Demaimay, Thibaud Berthelot, Laurine Bodin, Franck Joulain, Florence Pau, Gilles Recoque, Thierry Georges, and Patrice Camy "Recent progress in visible fluoride fiber lasers", Proc. SPIE 13003, Fiber Lasers and Glass Photonics: Materials through Applications IV, 130030D (20 June 2024); https://doi.org/10.1117/12.3023599

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