The effect of Cr concentration on emission cross-section and fluorescence lifetime in Cr,Yb:YAG crystal

被引：24

作者：

Dong, J ^{[1
]}

Deng, PZ

机构：

[1] Univ Cent Florida, Sch Opt, Orlando, FL 32816 USA

[2] Univ Cent Florida, CREOL, Orlando, FL 32816 USA

[3] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2003年 / 104卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Cr; Yb : YAG crystal; self-Q-switched; energy transfer; emission cross-section;

D O I：

10.1016/S0022-2313(03)00012-7

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The emission cross-section, and fluorescence lifetime of Cr,Yb:YAG with different concentration of Cr4+ and Yb:YAG were measured. With the increase of Cr concentration in Cr,Yb:YAG, the emission cross-section keeps constant and fluorescence lifetime decreases. The quantum efficiency decreases and the energy transfer efficiency from Yb3+ to Cr4+ increase as the Cr concentration increases in Cr-Yb-co-doped Cr,Yb:YAG system. The nonradiative Yb3+ --> Cr4+ energy transfer-is consistent with an electric dipole-dipole interaction mechanism. The optimum Cr concentration for Cr,Yb:YAG was estimated. Also the potential of Cr,Yb:YAG as a self-Q-switched laser crystal was discussed. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：151 / 158

页数：8

共 23 条

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