Anti-Stokes luminescence and site selectivity in La2Ti2O7:Pr3+

被引：61

作者：

Diallo, PT

Boutinaud, P ^{[1
]}

Mahiou, R

机构：

[1] Univ Clermont Ferrand, Lab Mat Inorgan, F-63177 Clermont Ferrand, France

[2] ENSCCF, CNRS, UMR 6002, F-63177 Clermont Ferrand, France

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2002年 / 341卷 / 1-2期

关键词：

insulators; nonlinear optics; luminescence;

D O I：

10.1016/S0925-8388(02)00098-1

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：

The luminescence properties of 5 mol% Pr3+-doped La2Ti2O7 are investigated at low temperature upon various laser excitations. As the structure of this titanate offers four different crystallographic sites for the praseodymium ions, the spectral lines attribution is made a hard task. The spectroscopic study shows that while the attribution of P-3(0)-->H-3(4) emission lines is not accurate on the basis of Stokes spectra, spectral site selectivity and lines attribution can be achieved successfully by considering orange-to-blue anti-Stokes spectra. A qualitative model is proposed to interpret the up-conversion mechanism in this material. (C) 2002 Elsevier Science B V All rights reserved.

引用

页码：139 / 143

页数：5

共 17 条

[1] Simple way to test the validity of 2S+1LJ barycenters of rare earth ions (e.g. 4f2, 4f3 and 4f6 configurations) [J].