Emission Wavelength Limits of a Continuous-Wave Thulium-Doped Fiber Laser Source Operating at 1.94 µm, 2.09 µm or 2.12 µm

We present a thulium-doped single-oscillator monolithic fiber laser emitting successively at three wavelengths, especially at unusual long wavelengths as 2.09 µm and even at 2.12 µm. The 793 nm core absorption of 8.42 dB/m allows for achieving a slope efficiency higher than 43% both at 1.94 µm and 2...

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Bibliographic Details
Published in:Photonics 2024-03, Vol.11 (3), p.246
Main Authors: Louot, Christophe, Sanson, Félix, Motard, Arnaud, Ibach, Thierry, Manek-Hönninger, Inka, Berrou, Antoine, Dalloz, Nicolas, Robin, Thierry, Cadier, Benoit, Hildenbrand-Dhollande, Anne
Format: Article
Language:English
Subjects:
Bragg gratings
Comparative analysis
Continuous fibers
Continuous radiation
Doped fibers
Efficiency
Electrons
Emissions
Equipment and supplies
Fiber lasers
Fiber optics
high-power fiber lasers
infrared lasers
Lasers
optical fibers
Robin, Thierry
Thulium
Wavelengths
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Summary:We present a thulium-doped single-oscillator monolithic fiber laser emitting successively at three wavelengths, especially at unusual long wavelengths as 2.09 µm and even at 2.12 µm. The 793 nm core absorption of 8.42 dB/m allows for achieving a slope efficiency higher than 43% both at 1.94 µm and 2.09 µm. The operation of the laser at 1.94 µm, 2.09 µm, and 2.12 µm is compared by using different fiber Bragg gratings to push the limit of thulium ions emission above 2.05 µm. This is the first demonstration of emission exceeding wavelengths of 2.1 µm of an only thulium-doped fiber laser, to the best of our knowledge.
ISSN:2304-6732
2304-6732
DOI:10.3390/photonics11030246