Abstract
Highly efficient laser action from an Ytterbium-doped fiber (YDF) is demonstrated using a fiber Bragg grating (FBG) in conjunction with a 4% Fresnel reflection at room temperature. The YDF used is drawn from Yb2O3-doped preform, fabricated through deposition of porous layer of composition SiO2-GeO2 by the MCVD process in conjunction with a solution doping technique. The fabricated YDF has a core composition of 0.2 wt % of Yb2O3, 1.8 wt % of Al2O3 and 23 wt % of GeO2 with a pump absorption of 9.0 dB/m. The fiber laser operates at wavelength of 1028 nm with a slope efficiency of 88% with respect to the launched 976 nm pump power using the YDF length of 7 m.
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Original Russian Text © Astro, Ltd., 2010.
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Harun, S.W., Paul, M.C., Moghaddam, M.R.A. et al. Diode-pumped 1028 nm Ytterbium-doped fiber laser with near 90% slope efficiency. Laser Phys. 20, 656–660 (2010). https://doi.org/10.1134/S1054660X10050051
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DOI: https://doi.org/10.1134/S1054660X10050051