Mechanisms and Concentration Dependence of Upconversion Fluorescence in Er3+ and Tm3+ Codoped Tellurite Glasses
SHEN Xiang, NIE Qiu-Hua, XU Tie-Feng, PENG Tao, GAO Yuan
Faculty of Information Science and Engineering, Ningbo University, Ningbo 315211
Mechanisms and Concentration Dependence of Upconversion Fluorescence in Er3+ and Tm3+ Codoped Tellurite Glasses
SHEN Xiang;NIE Qiu-Hua;XU Tie-Feng;PENG Tao;GAO Yuan
Faculty of Information Science and Engineering, Ningbo University, Ningbo 315211
关键词 ：
74.25.Gz ,
42.70.Hj ,
73.61.Jc ,
76.30.Kg
Abstract ： We investigate the upconversion luminescence of Er3+ and Tm3+ codoped tellurite glasses under both the 975 and 800nm excitations. By Tm3+ codoping, the Er3+ green emission corresponding to the (4 S3/2 , 2 H11/2 ) → 4 I15/2 transitions was quenched, while the red emission corresponding to the 4 F9/2 → 4 I15/2 transition was selectively sensitized. The red emission has a maximum in the range where the ratio of Er3+ - to Tm3+ -content is about two and its fluorescence intensity becomes 1.5 and 5 times larger at the maximum than those in the absence of Tm3+ for 975 and 800nm excitations, respectively. The results were explained considering the influence of energy transfers between these two active ions.
Key words ：
74.25.Gz
42.70.Hj
73.61.Jc
76.30.Kg
出版日期: 2004-12-01
引用本文:
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]. 中国物理快报, 2004, 21(12): 2507-2510.
3+ and Tm3+ Codoped Tellurite Glasses. Chin. Phys. Lett., 2004, 21(12): 2507-2510.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2004/V21/I12/2507
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2004, Vol. 21 
