Optical properties of Er3+-singly doped and Er3+/Yb3+-codoped novel oxyfluoride glasses

被引：44

作者：

Feng, Li

Wang, Jing

Tang, Qiang

Hu, Haili

Liang, Hongbin

Su, Qiang ^{[1
]}

机构：

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

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

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2006年 / 352卷 / 21-22期

基金：

中国国家自然科学基金;

关键词：

optical spectroscopy; absorption; luminescence; upconversion; time resolved measurements; silicates; rare-earths in glasses;

D O I：

10.1016/j.jnoncrysol.2006.02.038

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Novel oxyfluoride glasses SiO2-Al2O3-Na,O-ZnF2 doped with Er3+ and Er3+/Yb3+ were fabricated. The optical properties of the synthesized glasses were experimentally and theoretically investigated in detail. The experimental and calculated oscillator strengths of Er3+ were determined by measurement of the absorption spectrum of Er3+-singly doped glass. According to the Judd-Ofelt theory, the experimental intensity parameters were calculated, from which the radiative transition probabilities, fluorescence branching ratios and radiative lifetimes were obtained. The fluorescence lifetime and quantum efficiency for the near-infrared emission of Er3+-singly doped glass were determined to be 3.0 ms, and 42%, respectively. Visible upconversion luminescence was observed under 980 nm diode laser excitation. The dependence of the upconversion emission intensity upon the excitation power was examined, and the upconversion mechanisms are discussed. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：2090 / 2095

页数：6

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