| Mechanisms and Concentration Dependence of Upconversion Fluorescence in Er^3＋ and Tm^3＋ Codoped Tellurite Glasses |
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| 引用本文： | 沈祥,聂秋华,徐铁峰,彭涛,高媛.Mechanisms and Concentration Dependence of Upconversion Fluorescence in Er^3＋ and Tm^3＋ Codoped Tellurite Glasses[J].中国物理快报,2004,21(12):2507-2510. |
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| 作者姓名： | 沈祥 聂秋华 徐铁峰 彭涛 高媛 |
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| 作者单位： | FacultyofInformationScienceandEngineering,NingboUniversity,Ningbo315211 |
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| 摘 要： | We investigate the upconversion luminescence of Er3^ and Tm^3 codoped tellurite glasses under both the 975 and 80Ohm excitations. By Tm^3 codoping, the Er^3 green emission corresponding to the (^4S3/2, 2H11/2) → 4I15/2 transitions was quenched, while the red emission corresponding to the ^4F9/2 → ^4I15/2 transition was selectively sensitized. The red emission has a maximum in the range where the ratio of Er^3 - to Tm^3 -content is about two and its fluorescence intensity becomes 1.5 and 5 times larger at the maximum than those in the absence of Tm^3 for 975 and 800 nm excitations, respectively. The results were explained considering the influence of energy transfers between these two active ions.
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| 关 键 词： | 浓度依赖 荧光转换 亚碲酸盐玻璃 光学衰减 |
Mechanisms and Concentration Dependence of Upconversion Fluorescence in Er3+ and Tm3+ Codoped Tellurite Glasses |
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| SHEN Xiang,NIE Qiu-Hua,XU Tie-Feng,PENG Tao,GAO Yuan.Mechanisms and Concentration Dependence of Upconversion Fluorescence in Er3+ and Tm3+ Codoped Tellurite Glasses[J].Chinese Physics Letters,2004,21(12):2507-2510. |
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| Authors: | SHEN Xiang NIE Qiu-Hua XU Tie-Feng PENG Tao GAO Yuan |
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| Affiliation: | Faculty of Information Science and Engineering, Ningbo University, Ningbo 315211 |
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| Abstract: | |
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| Keywords: | 74 25 Gz 42 70 Hj 73 61 Jc 76 30 Kg |
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