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Title10-W-level monolithic dysprosium-doped fiber laser at 3.24  μm.
Publication TypeJournal Article
Year of Publication2019
AuthorsFortin, Vincent, Frédéric Jobin, Maxence Larose, Martin Bernier, and Réal Vallée
JournalOpt Lett
Volume44
Issue3
Pagination491-494
Date Published2019 Feb 01
ISSN1539-4794
Abstract

We report, to the best of our knowledge, the first entirely monolithic dysprosium (Dy)-doped fluoride fiber laser operating in the mid-IR region. The system delivers 10.1 W at 3.24 μm in continuous operation, a record for fiber oscillators in this range of wavelengths. The Dy fiber is pumped in-band using an erbium-doped fiber laser at 2.83 μm made in-house and connected through a fusion splice. Two fiber Bragg gratings directly written in the Dy-doped fiber form the 3.24 μm laser cavity to provide a spectrally controlled laser output. This substantial increase of output power in the 3.0-3.3 μm spectral range could open new possibilities for applications in spectroscopy and advanced manufacturing.

DOI10.1364/OL.44.000491
Alternate JournalOpt Lett
PubMed ID30702661