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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

不同铒离子掺杂浓度下碲酸盐玻璃荧光特性研究

周亚训1,2, 黄尚廉1, 周灵2, 徐铁峰2, 聂秋华2   

  1. 1. 重庆大学光电技术及系统教育部重点实验室, 重庆 400044; 2. 宁波大学信息科学与工程学院, 宁波 315211
  • 收稿日期:2006-08-14 修回日期:2006-09-30 出版日期:2007-07-20 网络出版日期:2007-07-20

Effect of Er3+ Ion Concentration on the Fluorescence Properties of Tellurite Glass

ZHOU Ya-Xun 1,2, HUANG Shang-Lian1, ZHOU Ling2, XU Tie-Feng2, NIE Qiu-Hua2   

  1. 1. The Key Laboratory for Optoelectronic Technology & System,
    Education Ministry of China, Chongqing University, Chongqing 400044, China;
    2. College of Information Science and Engineering, Ningbo University, Ningbo 315211, China
  • Received:2006-08-14 Revised:2006-09-30 Published:2007-07-20 Online:2007-07-20

PDF (PC)

1655

被引次数

15

摘要： 测试了掺铒碲酸盐玻璃的荧光特性, 研究了4I13/2能级上Er3+离子的荧光谱、荧光强度和荧光寿命. 研究显示, 掺铒碲酸盐玻璃中存在着强烈的荧光俘获效应和浓度猝灭效应. 荧光俘获效应使得荧光谱中的各谱线成分相对强度随着Er3+离子掺杂浓度的增加发生改变, 从而导致荧光谱主峰的变迁和荧光谱的展宽. Er3+离子间的协作上转换引起的能量转移, 使得荧光强度在较高掺杂浓度下发生猝灭. 同时, 荧光俘获效应和浓度猝灭效应的相互作用, 导致荧光寿命随着Er3+离子掺杂浓度的增加呈现出先增大后减小的变化趋势.

关键词: 碲酸盐玻璃, 荧光特性, 荧光俘获, 浓度猝灭

Abstract: Fluorescence properties of Er3+:4I13/2～4I15/2 transition were measured in a tellurite glass. The fluorescence spectra, fluorescence intensities and lifetimes were investigated as a function of erbium ion concentration. It is found that there are intense radiation trapping and concentration quenching effect in erbium-doped tellurite glasses. With the increase of erbium ion concentration, fluorescence spectrum broadens significantly and its main emission peak shifts from 1532nm to 1556nm as a result of the changed relative intensity of each spectral component caused by radiation trapping. Fluorescence intensity decreases strongly with higher erbium ion concentration due to concentration quenching effect caused by cooperative upconversion among Er3+ ions. Also, radiation trapping and concentration quenching cause fluorescence lifetime increase at first and then decrease rapidly with the increase of Er3+ concentration.

Key words: tellurite glass, fluorescence characteristics, radiation trapping, concentration quenching

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