Ytterbium-induced energy-transfer upconversion enhancement in Nd3+/Pr3+-codoped PbGeO3-PbF2-CdF2 glass excited at 810nm

被引：16

作者：

Gouveia-Neto, AS ^{[1
]}

da Costa, EB

Bueno, LA

Ribeiro, SJL

Messaddeq, Y

机构：

[1] Univ Fed Pernambuco, Lab Foton, Dept Fis & Matemat, BR-52171900 Recife, PE, Brazil

[2] ACET, UNOESC, BR-89560000 Videira, SC, Brazil

[3] UNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil

来源：

JOURNAL OF LUMINESCENCE | 2006年 / 116卷 / 1-2期

基金：

巴西圣保罗研究基金会;

关键词：

energy transfer; upconversion; glass; rare earth; luminescence;

D O I：

10.1016/j.jlumin.2005.02.013

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The effect of ytterbium ions upon energy transfer (ET) excited upconversion emission in Nd3+/Pr3+ -codoped PbGeO3-PbF2-CdF2 glass under 810 nm diode laser excitation is investigated. The results revealed that the presence of Yb3+ ions in the Nd3+/Pr3+-doped sample yields a fourfold enhancement in the visible and near infrared upconversion luminescence. The dependence of the upconversion process upon the excitation power, Nd3+, and Yb3+ concentrations is examined. The results indicated that ytterbium plays a major role in the ET upconversion process by bridging the 810nm neodymium excitation to praseodymium ions. The population of the Pr3+ ions P-3(0) emitting level was accomplished through a multi-ion interaction involving ground-state and excited-state absorption of pump photons at 810 nm by the Nd3+ followed by successive ET involving the Nd3+-Yb3+ and Yb3+-Pr3+ pairs. There is also direct ET Nd3+-Pr3+. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：52 / 58

页数：7

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