High-efficiency fluoroindate glass fiber laser

We report the high-efficiency operation of a 3.05 µm dysprosium-doped fluoroindate glass fiber laser that is in-band pumped at 2.83 µm using an erbium-doped fluorozirconate glass fiber laser. The demonstrated slope efficiency of the free-running laser of 82% represents approximately 90% of the Stoke...

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Bibliographic Details
Published in:Optics letters 2023-05, Vol.48 (10), p.2664-2667
Main Authors: Ososkov, Yan, Lee, Jinho, Fernandez, Toney T, Fuerbach, Alex, Jackson, Stuart D
Format: Article
Language:English
Subjects:
Bragg gratings
Dysprosium
Erbium
Fiber lasers
Glass fibers
Infrared lasers
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Summary:We report the high-efficiency operation of a 3.05 µm dysprosium-doped fluoroindate glass fiber laser that is in-band pumped at 2.83 µm using an erbium-doped fluorozirconate glass fiber laser. The demonstrated slope efficiency of the free-running laser of 82% represents approximately 90% of the Stokes efficiency limit; a maximum output power of 0.36 W, the highest for a fluoroindate glass fiber laser, was recorded. Narrow-linewidth wavelength stabilization at 3.2 µm was achieved by utilizing a first-reported, to the best of our knowledge, high-reflectivity fiber Bragg grating inscribed in the Dy -doped fluoroindate glass. These results lay the foundation for future power-scaling of mid-infrared fiber lasers using fluoroindate glass.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.486318