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Proceedings Paper

Suppressing fiber tip failure: On the road to 100 W-level 3-μm fiber lasers (Conference Presentation)
Author(s): Frédéric Maes; Yigit Ozan Aydin; Thomas Poulin; Souleymane Toubou Bah; Vincent Fortin; Réal Vallée; Martin Bernier

Paper Abstract

We report on the use of OH diffusion barrier coatings to suppress fiber tip degradation in high-power 3 μm fiber lasers. To this extent, silicon nitride thin-films are sputtered on the endface of a 20 W erbium-doped fluoride fiber laser at 2.83 μm. By monitoring the temperature evolution of the output fiber tip over a 24 hour time period, we validate the effectiveness of silicon nitride thin films in mitigating fiber tip degradation. These results, along with previous demonstrations, underline the potential of 3 μm fiber lasers to reach 100 W of output power in the near future.

Paper Details

Date Published: 11 March 2020
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Proc. SPIE 11260, Fiber Lasers XVII: Technology and Systems, 112601O (11 March 2020); doi: 10.1117/12.2544504
Show Author Affiliations
Frédéric Maes, Univ. Laval (Canada)
Yigit Ozan Aydin, Univ. Laval (Canada)
Thomas Poulin, Univ. Laval (Canada)
Souleymane Toubou Bah, Univ. Laval (Canada)
Vincent Fortin, Univ. Laval (Canada)
Réal Vallée, Univ. Laval (Canada)
Martin Bernier, Univ. Laval (Canada)


Published in SPIE Proceedings Vol. 11260:
Fiber Lasers XVII: Technology and Systems
Liang Dong, Editor(s)

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