Frequency upconversion luminescence from Yb+3-Tm+3 codoped PbO-GeO2 glasses containing silver nanoparticles

被引：25

作者：

Assumpcao, Thiago A. A. ^{[2
]}

da Silva, Davinson M. ^{[2
]}

Kassab, Luciana R. P. ^{[3
]}

de Araujo, Cid B. ^{[1
]}

机构：

[1] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil

[2] Univ Sao Paulo, Escola Politecn, Dept Engn Sistemas Eletron, BR-05508900 Sao Paulo, Brazil

[3] Univ Estadual Paulista, CEETEPS, FATEC SP, Lab Vidros & Datacao, BR-01124060 Sao Paulo, Brazil

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 106卷 / 06期

关键词：

GERMANATE GLASSES; PARTICLES; FLUORESCENCE; GOLD; SPECTROSCOPY; TELLURITE; LIGHT; IONS;

D O I：

10.1063/1.3211300

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Infrared-to-visible and infrared-to-infrared frequency upconversion processes in Yb3+-Tm3+ doped PbO-GeO2 glasses containing silver nanoparticles (NPs) were investigated. The experiments were performed by exciting the samples with a diode laser operating at 980 nm (in resonance with the Yb3+ transition F-2(7/2)-> F-2(5/2)) and observing the photoluminescence (PL) in the visible and infrared regions due to energy transfer from Yb3+ to Tm3+ ions followed by excited state absorption in the Tm3+ ions. The intensified local field in the vicinity of the metallic NPs contributes for enhancement in the PL intensity at 480 nm (Tm3+ :(1)G(4)-> H-3(6)) and at 800 nm (Tm3+ : H-3(4) -> H-3(6)). (C) 2009 American Institute of Physics. [doi:10.1063/1.3211300]

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