Luminescence of the Cr3+ R-lines in pure and MgO co-doped near stoichiometric LiNbO3:Cr crystals

被引：9

作者：

Han, TPJ

Jaque, F

Bermúdez, V

Diéguez, E

机构：

[1] Univ Strathclyde, Dept Phys, Glasgow G4 0NG, Lanark, Scotland

[2] Univ Autonoma Madrid, Dept Fis Mat, E-28049 Madrid, Spain

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 369卷 / 5-6期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1016/S0009-2614(02)02028-6

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 photoluminescence property of pure and MgO co-doped near stoichiometric LiNbO3:Cr crystals has been investigated. It has been found that the presence of low Mg ion content in the crystals induces the coexistence of two types of Cr3+ sites; Cr3+ ion substituting Li+ and Nb5+ sites. In MgO co-doped samples, four narrow emission bands have been found and three of them are correlated with the broad absorption bands associated to the Cr3+ ions located in Nb5+ site ([Cr](Nb) centres). The observation of the zero-phonon line at 13 540 cm(-1) only in pure LiNbO3:Cr crystals of near stoichiometric composition suggests it could be used as a probe to monitor the composition of LiNbO3 crystals. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：519 / 524

页数：6

共 14 条

[1]

ABRAHAMS SC, 1986, ACTA CRYSTALLOGR B, V42, P1846

[2] OPTICAL BANDS OF CR-3+ INDUCED BY MG-2+ IONS IN LINBO3, CR,MG [J].