Optical transitions and up-conversion emission of Tm3+-singly doped and Tm3+/Yb3+-codoped oxyfluoride glasses

被引：12

作者：

Feng, Li

Tang, Qiang

Liang, Lifang

Wang, Jing

Liang, Hongbin

Su, Qiang ^{[1
]}

机构：

[1] Sun Yat Sen Zhongshan Univ, State Key Lab Optoelect Mat & Technol, Sch Chem & Chem Engn, Guangzhou 510275, Peoples R China

[2] Sun Yat Sen Zhongshan Univ, Dept Phys, Guangzhou 510275, Peoples R China

[3] Guangxi Normal Coll, Dept Chem, Nanning 530001, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2007年 / 436卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

optical properties; up-conversion; Judd-Ofelt theory; glasses;

D O I：

10.1016/j.jallcom.2006.07.022

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：

Novel oxyfluoride glasses SiO2-Al2O3-Na2O-ZnF2 doped with Tm3+ and Tm3+/Yb3+ were fabricated. The optical properties of the synthesized glasses were experimentally and theoretically investigated in detail. According to the Judd-Ofelt theory, the Judd-Ofelt intensity parameters were calculated. With these intensity parameters, the radiative transition probabilities, fluorescence branching ratios and radiative lifetimes were obtained. The fluorescence lifetime and quantum efficiency for D-1(2)->->, F-3(4) emission of TM3+ -singly doped glass were determined to be 12 mu s, and 35.3%, respectively. The up-conversion luminescence was observed upon excitation with 980 nm diode laser. The dependence of the up-conversion emission intensity upon the excitation power was examined, and the up-conversion mechanisms were discussed. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：272 / 277

页数：6

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