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		题名	作者	年代	出处	被引量
	1	Relaxation dynamics of excited states of Tm3+ ions in TeO2-ZnO-Na2O-Y2O3 glasses显示文摘Tellurite glasses with the composition of xTm2O3-(6-x)Y2O3-3Na2O-25ZnO-66TeO2(where 0≤x≤6)were obtained by the melt-quenching technique.Absorption(300 K),excitation(300 K)and fluorescence spectra(300 K)as well as fluorescence decay curves of Tm^3+-doped title glasses are presented and discussed in details.The Judd-Ofelt analysis based on the room temperature absorption spectrum was applied for determination of fundamental fluorescence properties such as radiative transition probabilities(AT),branching ratios(βR),radiative lifetimes(τR)of the emitting levels of the Tm^3+ion and stimulated emission cross-sections(σem).Fluorescence spectra were recorded and analysed in the visible and near-infrared spectral range.The emission and effective cross-section were calculated for the 3F4→3H6 transition,showing that the investigated glasses are promising laser host materials,operating at 1.8μm.The observed concentration quenching and non-exponential decay curves from the 1 G4 and 3H4 states indicate nonradiative energy transfer between Tm^3+ions.The analysis of non-exponential fluorescence decay curves from the 1 G4 and 3H4 levels was carried out in framework of the InokutiHirayama and Yokota-Tanimoto models and energy transfer microparameters were determined.The self-quenching model was proposed for describing relaxation of the first excited state of the Tm^3+ion.	Lukasz Marek Marcin Sobczyk Wladyslaw Wrzeszcz	2019	Journal of Rare Earths2019，37，11：	0

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