Plasmonic Coupling in Er3+:Au Tellurite Glass

被引：39

作者：

Osorio, Sergio P. A. ^{[1
]}

Rivera, Victor A. Garcia ^{[1
]}

Nunes, Luiz Antonio O. ^{[1
]}

Marega, Euclydes, Jr. ^{[1
]}

Manzani, Danilo ^{[2
]}

Messaddeq, Younes ^{[2
]}

机构：

[1] Univ Sao Paulo, INOF, Inst Fis Sao Carlos, BR-13560970 Sao Paulo, Brazil

[2] Univ Estadual Paulista, Inst Quim Araraquara, Sao Paulo, Brazil

来源：

PLASMONICS | 2012年 / 7卷 / 01期

基金：

巴西圣保罗研究基金会;

关键词：

Gold nanoparticles; Localized surface plasmon resonance; Fluorescence enhancement; Tellurite glass; EMISSION; FIBER;

D O I：

10.1007/s11468-011-9275-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, we report on luminescence and absorbance effects of Er+3:Au-doped tellurite glasses synthesized by a melting-quenching and heat treatment technique. After annealing times of 2.5, 5.0, 7.5, and 10.0 h, at 300 A degrees C, the gold nanoparticles (GNP) effects on the Er+3 are verified from luminescence spectra and the corresponding levels lifetime. The localized surface plasmon resonance around 800 nm produced a maximum fluorescence enhancement for the band ranging from 800 to 840 nm, corresponding to the transitions H-4(11/2) -> aEuro parts per thousand I-4(13/2) (805 nm) and S-4(3/2) -> aEuro parts per thousand I-4(13/2) (840 nm), with annealing time till 7.5 h. The measured lifetime of the levels H-4(11/2) and S-4(3/2) confirmed the lifetime reduction due to the energy transfer from the GNP to Er+3, causing an enhanced photon emission rate in these levels.

引用

页码：53 / 58

页数：6

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