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- W2767770525 abstract "Abstract The Dy3+/Yb3+ co-doped germanate glasses with good thermal stability have been prepared by the conventional melt quenching method. The J-O intensity parameters and radiative properties such as spontaneous transition probilities (Arad), fluorescence branching ratios (β) and radiative lifetimes (τrad) were investigated according to the absorption spectrum based on Judd-Ofelt theory. An intense emission around ∼3 μm with the FWHM reaching to 322 nm was obtained in present glasses excited by 980 nm LD. The high spontaneous transition probability (63.94 s−1), large emission cross section (6.0 × 10−21 cm2) and superior gain performance corresponding to the Dy3+: 6H13/2 → 6H15/2 transition were obtained. Moreover, the energy transfer mechanism was analyzed qualitatively, and it was found that the energy transfer from Yb3+: 2F5/2 to Dy3+: 6H5/2 level could be quite efficient. Hence, the results indicated that the prepared Dy3+/Yb3+ co-doped germanate glass could be a potential candidate for ∼3 μm mid-infrared solid state lasers." @default.
- W2767770525 created "2017-11-17" @default.
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- W2767770525 date "2018-01-01" @default.
- W2767770525 modified "2023-10-18" @default.
- W2767770525 title "Broadband ∼3 μm mid-infrared emission in Dy3+/Yb3+ co-doped germanate glasses" @default.
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- W2767770525 doi "https://doi.org/10.1016/j.optmat.2017.10.034" @default.
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