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- W605207946 abstract "研究了808 nm和977 nm激光二极管抽运下铥/镱共掺TeO2-Ga2O3-R2O(R=Li，Na，K)玻璃光谱特性.利用Judd-Ofelt 理论计算了Tm3+离子在碲镓酸盐玻璃中自发辐射跃迁概率、荧光分支比和辐射寿命等光谱参数.在977 nm激光二极管抽运下，观测到Tm3+/Yb3+共掺碲镓酸盐玻璃很强的476 nm上转换蓝光(1G4→3H6)和较弱的650 nm上转换红光(1G4→3H4和3F2，3→3H6).分析表明476 nm蓝光发射为三光子吸收过程，650 nm红光发射为双光子和三光子混合吸收过程；而在808 nm激光二极管抽运下，玻璃上转换蓝色荧光为双光子吸收过程.实验发现，随着碱金属离子半径的增大，977 nm激光二极管抽运下蓝光上转换发光强度增强，而用808 nm激光二极管抽运蓝光上转换发光无明显的变化." @default.
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- W605207946 date "2007-01-01" @default.
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- W605207946 title "Blue-upconversion in thulium and ytterbium codoped tellurite-gallium glasses pumped by laser diodes" @default.
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