Enhancement of blue upconversion mechanism in YLiF4:Yb:Tm:Nd crystals -: art. no. 113504
Enhancement of blue upconversion mechanism in YLiF4:Yb:Tm:Nd crystals -: art. no. 113504
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DOI：
10.1063/1.2137462
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发表时间：
2005-12-01
影响因子：
3.2
通讯作者：
Vieira, ND
中科院分区：
文献类型：
--
作者：
Courrol, LC;Ranieri, IM;Vieira, ND
本文比较了YLiF4：Yb：Tm和YLiF4：Yb：Tm：Nd两种敏化体系，确定了在792 nm附近激发下，导致上转换发光增强20倍的最重要的工艺。对不同浓度的Nd3+离子的483 nm和1030 nm发射的分析表明，Nd3+和Yb3+之间的能量传递是上转换发光增强的主要机制。(C)2005年美国物理研究所。
In this paper we present a comparison between YLiF4:Yb:Tm and YLiF4:Yb:Tm:Nd systems identifying the most important processes that lead to a 20 times enhancement of thulium blue upconversion emission, under excitation around 792 nm, for the double sensitized system. Analysis of the 483 nm and 1030 nm emissions for the samples with different concentrations of Nd3+ ions showed that energy transfer between Nd3+ and Yb3+ is the main mechanism and responsible for the enhancement in upconversion. (c) 2005 American Institute of Physics.