Investigation of 2.9 μm luminescence properties and energy transfer in Tm^(3+)/Dy^(3+) co-doped chalcohalide glasses  

作　　者：李忠秀 徐铁峰 沈祥 戴世勋 王训四 聂秋华 章向华 

机构地区：[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

出　　处：《Journal of Rare Earths》2011年第2期105-108,共4页稀土学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (60878042, 60978058);Natural Science Foundation of Zhejiang Province (Y407253, Y1090996);K.C. Wong Magna Fund in Ningbo University

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.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.

关 键 词：chalcohalide glasses luminescence properties energy transfer Tm3＋/Dy3＋ rare earths 

分 类 号：TQ171.1[化学工程—玻璃工业]