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首页> 外文期刊>Optical Materials >Excited energy migration and fluorescence decay in Yb-doped and Yb/Pr-codoped tellurite glasses
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Excited energy migration and fluorescence decay in Yb-doped and Yb/Pr-codoped tellurite glasses

机译：掺Yb和掺Yb / Pr的碲酸盐玻璃的激发能量迁移和荧光衰减

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摘要

Concentration and temperature dependences of lifetime of Yb~3+ f 2~F_5/2 level were investigated in tellurite glasses doped with up to 6 mol/100 Yb_2O_3. The lifetime obtained by l.02 μm emission from the Yb~3+ ions at room temperature was insensitive to the Yb_2O_3 concentration in singly doped glasses. However, the Yb-lifetime showed strong concentration quenching with the presence of only 0.l mol/100 Pr_2O_3. The energy transfer efficiency from Yb to Pr in a codoped glass was found to be more than 90/100 even in the glass of [Yb]/[Pr] > l00. The Yb-lifetime in singly doped glass in- creased and that in codoped glass decreased with increasing temperature. These results can be explained by assuming rapid energy migration between Yb ions and promotion of Yb~3+ : 2~F_5/2 → Pr~3- : 1~G_4 transfer at higher temperature.
机译：研究了Yb〜3 + f 2〜F_5 / 2能级的掺杂浓度和寿命的温度依赖性，该掺杂量最高掺杂了6 mol / 100 Yb_2O_3。在室温下，从Yb〜3 +离子发射1.02μm所获得的寿命对单掺杂玻璃中的Yb_2O_3浓度不敏感。然而，Yb寿命显示出强的浓度猝灭，仅存在0.1mol / 100Pr_2O_3。发现即使在[Yb] / [Pr]> 100的玻璃中，在共掺杂玻璃中从Yb到Pr的能量转移效率也超过90/100。随着温度的升高，单掺杂玻璃的Yb寿命增加，而共掺杂玻璃的Yb寿命减少。这些结果可以通过假设Yb离子之间能量快速迁移和在较高温度下促进Yb〜3 +：2〜F_5 / 2→Pr〜3-：1〜G_4转移来解释。

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