Optical properties of Ho3+-doped novel oxyfluoride glasses

被引：103

作者：

Feng, Li

Wang, Jing

Tang, Qiang

Liang, Lifang

Liang, Hongbin

Su, Qiang ^{[1
]}

机构：

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

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

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

来源：

JOURNAL OF LUMINESCENCE | 2007年 / 124卷 / 02期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/j.jlumin.2006.02.017

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Novel oxyfluoride glasses SiO2-Al2O3-Na2O-ZnF2 doped with Ho3+ and Ho3+/Yb3+ were fabricated. The optical properties of the synthesized glasses were experimentally and theoretically investigated in detail. The experimental and calculated oscillator strengths of Ho3+ were determined by measurement of absorption spectrum of Ho3+-singly doped glass. According to the Judd-Ofelt theory, the Judd-Ofelt parameters were calculated, by which the radiative transition probabilities, fluorescence branching ratios and radiative lifetimes were obtained. Visible upconversion luminescence was observed under 980 nm diode laser excitation and the influence of Yb3+ concentration on the emission bands were also investigated. The dependence of the upconversion emission intensity upon the excitation power was examined, and the upconversion mechanisms were discussed. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：187 / 194

页数：8

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