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- W3013526265 endingPage "117254" @default.
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- W3013526265 abstract "The 2.0 μm spectral characteristics of the 980 nm LD pumped Er3+/Ho3+/Yb3+ tri-doped Na5Y9F32 single crystals grown by an improved Bridgman method were investigated with the help of their absorption spectra, emission spectra and decay curves. The introduction of Yb3+ and Er3+ greatly improves the 2.0 fluorescence intensity through joint energy transfer processes from Yb3+ to Er3+, and Er3+ to Ho3+. The doping concentrations of 0.5 mol% Er3+ and 1.0 mol% Yb3+ ions were optimized to obtain the maximum 2.0 μm fluorescence intensities for the fixed 0.8 mol% Ho3+/1 mol% Yb3+ and 0.8 mol% Ho3+/0.5 mol% Er3+ doped Na5Y9F32 single crystals. Besides, according to the absorption and fluorescence spectra of the crystals, the absorption and emission cross-sections were calculated, and excellent gain performance was also obtained. Meanwhile, the maximum 2.0 μm emission lifetime of Er3+/Ho3+/Yb3+ tri-doped Na5Y9F32 single crystal can reach ~21.82 ms. The energy transfer mechanisms among the three rare-earth ions were further investigated by calculating energy transfer micro-parameters (CDA) and efficiencies. The excellent properties in both intense emission at 2.0 μm and chemical stability obtained in the Er3+/Ho3+/Yb3+ tri-doped Na5Y9F32 single crystals make them promising candidate material for 2.0 μm laser." @default.
- W3013526265 created "2020-04-03" @default.
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- W3013526265 date "2020-07-01" @default.
- W3013526265 modified "2023-10-14" @default.
- W3013526265 title "Ho3+ doped Na5Y9F32 single crystals doubly sensitized by Er3+ and Yb3+ for efficient 2.0 μm emission" @default.
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- W3013526265 doi "https://doi.org/10.1016/j.jlumin.2020.117254" @default.
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