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Power scaling of 2 µm ytterbium-sensitised thulium-doped silica fibre laser diode-pumped at 975 nm

Power scaling of 2 µm ytterbium-sensitised thulium-doped silica fibre laser diode-pumped at 975 nm

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An ytterbium-sensitised thulium-doped silica fibre laser that generates up to 75 W of output power in the 2 µm wavelength range when cladding-pumped by a 975 nm diode stack is reported. The slope efficiency is 32% with respect to the launched pump power and the beam quality factor (M2) is 1.3.

References

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      • J.E. Townsend , W.L. Barnes , K.P. Jedrzejewski , S.G. Grubb . Yb3+ sensitised Er3+ doped silica optical fibre with ultrahigh transfer efficiency and gain. Electron. Lett. , 958 - 1959
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      • S.D. Jackson . Power scaling method for 2-µm diode-cladding-pumped Tm3+-doped silica fiber lasers that uses Yb3+ codoping. Opt. Lett. , 2192 - 2194
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      • W.A. Clarkson , N.P. Barnes , P.W. Turner , J. Nilsson , D.C. Hanna . High-power cladding-pumped Tm-doped silica fiber laser with wavelength tuning from 1860 to 2090 nm. Opt. Lett. , 1989 - 1991
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