Spectroscopic properties of water free Nd2O3-doped low silica calcium aluminosilicate glasses

被引：46

作者：

Pecoraro, E

Sampaio, JA

Nunes, LAO

Gama, S

Baesso, ML

机构：

[1] Univ Estadual Maringa, Dept Fis, BR-87020900 Maringa, Parana, Brazil

[2] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil

[3] Univ Sao Paulo, Grp Espectroscopia Solidos, Inst Fis Sao Carlos, BR-13560250 Sao Carlos, SP, Brazil

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2000年 / 277卷 / 2-3期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1016/S0022-3093(00)00316-1

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this work, low silica calcium aluminosilicate glasses (LSCA) doped with different concentrations of Nd2O3 were prepared under vacuum conditions and investigated through spectroscopic measurements. UV, visible and near IR optical absorption spectra, IR luminescence spectra, and fluorescent time decay were measured. Judd-Ofelt model was used in conjunction with these data to calculate intensity parameters (Omega (2), Omega (4) and Omega (6)), emission cross-section, radiative lifetime, branching ratio and fluorescence quantum efficiency. The up-conversion properties of Nd3+ were investigated following ((4)G(5/2) + (2)G(7/2)) excitation, and both visible and UV up-conversion have been observed. These results combined with its high fluorescence quantum efficiency and excellent mechanical properties, suggest that this glass may be a candidate to be used as laser host material for near IR with a further possibility of application in the UV and visible spectral regions. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：73 / 81

页数：9

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