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Erbium-doped tellurite-based glasses(Er3+:TeO2-ZnO-La2O3) are prepared by the conventional melt-quenching technique,and concentration-dependent luminescence properties of Er3+ are investigated.A significant spectral broadening of the 1.53 μm fluorescence corresponding to 4I13/2 →4I15/2 transition is observed,and the fluorescence decaying becomes a nearly exponential way with the increasing Er3+concentration.Radiation trapping is evoked to explain the broadening of 4I13/2 → 4I15/2 emission line of Er3+ ions.The optimum doping content of Er2O3 for 1.53 μm fluorescence emission is about 1.5 mol%.
Erbium-doped tellurite-based glasses (Er3 +: TeO2-ZnO-La2O3) were prepared by the conventional melt-quenching technique, and concentration- dependent luminescence properties of Er3 + are investigated. A significant spectral broadening of the 1.53 μm fluorescence corresponding to 4I13 / 2 → 4I15 / 2 transition is observed, and the fluorescence decaying becomes a nearly exponential way with the increasing Er3 + concentration. Radiation trapping is evoked to explain the broadening of 4I13 / 2 → 4I15 / 2 emission line of Er3 + ions.The optimum doping The content of Er2O3 for 1.53 μm fluorescence emission is about 1.5 mol%.