High-efficiency fluoroindate glass fiber laser
Date
2023
Authors
Ososkov, Y.
Lee, J.
Fernandez, T.T.
Fuerbach, A.
Jackson, S.D.
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Journal article
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Optics Letters, 2023; 48(10):2664-2667
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Abstract
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 fluorozir-conate 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 Dy³⁺-doped fluoroindate glass. These results lay the foundation for future power-scaling of mid-infrared fiber lasers using fluoroindate glass.
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Copyright 2023 Optica Publishing Group