Journal
OPTICS LETTERS
Volume 44, Issue 3, Pages 491-494Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.44.000491
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Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC) [IRCPJ469414-13]
- Canada Foundation for Innovation (CFI) [5180]
- Fonds de Recherche du Quebec-Nature et Technologies (FRQNT) [144616]
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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 mu m in continuous operation, a record for fiber oscillators in this range of wavelengths. The Dy(3+)fiber is pumped in-band using an erbium-doped fiber laser at 2.83 mu m made in-house and connected through a fusion splice. Two fiber Bragg gratings directly written in the Dy-doped fiber form the 3.24 mu m laser cavity to provide a spectrally controlled laser output. This substantial increase of output power in the 3.0-3.3 mu m spectral range could open new possibilities for applications in spec- troscopy and advanced manufacturing. (C) 2019 Optical Society of America
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