Time-resolved fluorescence line narrowing in Yb3+-doped fluoroindate glasses

被引：13

作者：

Martin, IR ^{[1
]}

Rodriguez, VD ^{[1
]}

Rodriguez-Mendoza, UR ^{[1
]}

Lavin, V ^{[1
]}

机构：

[1] Univ La Laguna, Dept Fis Fundamental & Expt, E-38206 Tenerife, Spain

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.57.3396

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fluorescence line narrowing measurements have been carried out between the lowest Stark components of the F-2(5/2)-->F-2(7/2) transition of Yb3+ ions in fluoroindate glasses. At low concentration (0.15 mol % of Yb3+) the luminescence spectrum consists in a narrow band which repeats the exciting profile, so the migration processes between Yb3+ ions are not important at this concentration. However, at higher concentrations (0.75 or 2.25 mol %) the luminescence spectrum contains moreover a broad band produced by other ions nonexcited initially (background fluorescence). A model is proposed to describe the temporal evolution of the narrow band fluorescence and the shape of the background fluorescence. A very good agreement with the experimental results is found taking into account a dipole-quadrupole (S=8) nonradiative energy transfer process assisted by a phonon.

引用

页码：3396 / 3401

页数：6

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