Investigation of 2.9 μm luminescence properties and energy transfer in Tm3+/Dy3+ co-doped chalcohalide glasses

被引：0
|
作者：
李忠秀 [1 ,2 ]
徐铁峰 [1 ]
沈祥 [1 ]
戴世勋 [1 ]
王训四 [1 ]
聂秋华 [1 ]
章向华 [3 ]
机构：
[1] College of Information Science and Engineering,Ningbo University
[2] College of Science,Jiangxi Agricultural University
[3] Laboratoire de Verres et Ceramiques,Universitè de Rennes I
来源：
JournalofRareEarths | 2011年 / 29卷 / 02期
基金：
中国国家自然科学基金;
关键词：
chalcohalide glasses; luminescence properties; energy transfer; Tm3+/Dy3+; rare earths;
D O I：
暂无
中图分类号：
TQ171.1 [基础理论];
学科分类号：
摘要：
A series of chalcohalide glasses based on the composition of 0.9(Ge30Ga5Se65)-0.1CsI with different Tm3+/Dy3+-codoped ions concentrations were synthesized by melt-quenching technique.The absorption spectra and 2.9 μm mid-infrared fluorescence spectra of glass samples under 800 nm laser excitation were measured.The results showed that Tm3+ was an efficient sensitizer,which could enhance the Dy3+: 2.9 μm fluorescence intensity significantly.The effective energy transfer between the two rare-earth ions were mainly attributed to the resonance energy transfer from Tm3+:3F4 to Dy3+:6H11/2 level.Emission cross section of 2.9 μm mid-infrared luminescence was also investigated according to Judd-Ofelt theory,σe=2.51×10–20 cm2.
引用
收藏
页码：105 / 108
页数：4
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