Optical bleaching of Cr3+ luminescence in near stoichiometric LiNbO3 crystals codoped with MgO

被引：3

作者：

Han, TPJ

Jaque, F

Arizméndi, L

Bermúdez, V

Suchocki, A

机构：

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

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

[3] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

来源：

JOURNAL OF LUMINESCENCE | 2004年 / 108卷 / 1-4期

关键词：

stoichiometric LiNbO3; spectroscopy; MgO; Cr3+;

D O I：

10.1016/j.jlumin.2004.01.010

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The emission intensity of the R-line of Cr3+ ions in near stoichiometric LiNbO(3)crystals codoped with MgO has been studied at a low temperature tinder excitation of the (4)A(2) --> T-4(1) transition. The R-line emission intensity associated with Cr3- ions in the Nb5- site, [Cr](Nb) centre, was observed to decrease with the illumination time whereas the Cr3+ ions located in the Li site, [Cr](Li) centres, are optically stable. This selective bleaching is explained by considering the photoionization of Cr3- ions in Nb5+. sites and the formation of Nb4+. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：55 / 58

页数：4

共 7 条

[1]

DIAZCARO J, 1996, PHYS REV B, V54, P27

[2]

Faust B., 1994, Ferroelectrics, V153, P297, DOI 10.1080/00150199408016583

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