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
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
收藏
页码:272 / 277
页数:6
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