Optical characterization of LiNbO3:Yb3+ crystals

被引：54

作者：

Montoya, E ^{[1
]}

Lorenzo, A ^{[1
]}

Bausá, LE ^{[1
]}

机构：

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

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1999年 / 11卷 / 01期

关键词：

D O I：

10.1088/0953-8984/11/1/026

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A spectroscopic study of Yb3+ ions in LiNbO3 and LiNbO3:MgO monocrystals is presented. Polarized absorption and luminescence spectra at Pow and room temperature allow the identification of the energy levels of the Yb3+ ion in these matrices. The fluorescence decay time has also been investigated and shows an exponential behaviour with a lifetime value of 530 mu s at 15 K for Yb3+ singly doped LiNbO3. Site selective spectroscopy measurements detect the existence of non-equivalent positions of the Yb3+ which can be related to the presence of Yb3+ in the Li+ octahedral site but with slightly different shifts from the regular Li site. Codoping with MgO induces new absorption and emission bands as a consequence of new Yb3+ centres which appear in the matrix due to the presence of Mg2+ ions.

引用

页码：311 / 320

页数：10

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