Fuseless side-pump combiner for efficient fluoride-based double-clad fiber pumping

Authors: Magnan-Saucier, SébastienDuval, SimonMatte-Breton, CharlesAydin, Yiğit OzanFortin, VincentLaRochelle, SophieBernier, MartinVallée, Réal
Abstract: We report a novel technique for side-pumping fluoridebased double clad fibers allowing a record coupling efficiency of 93 % and a maximum power handling near 100 W at 981 nm. Our simple technique is based on wrapping a silica taper around a fluoride fiber and therefore does not require any complex fusion between these two dissimilar fibers. Under passive cooling, pump combiners made of undoped and erbium-doped fluoride fibers were successfully operated during several hours at respective incident powers of 91 W and 44 W. Heat management issues and active cooling strategies are also discussed. This innovative combiner is a keystone towards the development of compact and robust highpower mid infrared fiber lasers and amplifiers.
Document Type: Article de recherche
Open Access Date: 19 March 2022
Document version: AM
Permalink: http://hdl.handle.net/20.500.11794/66655
This document was published in: Optics letters, (2020)
https://doi.org/10.1364/OL.409174
Optical Society
Alternative version: 10.1364/OL.409174
Collection:Articles publiés dans des revues avec comité de lecture

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