Concentration-dependent luminescence properties in Er3+-doped TeO2-ZnO-La2O3 glasses
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Abstract:
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%.
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This work has been supported by the National Natural Science Foundation of China (No.61178063), the Graduate Innovative Scientific Research Project of Zhejiang Province (No.YK2010048), the Natural Science Foundation of Ningbo City (No.2010A610172), the K. C. Wong Magna Fund,and the Hu Lan Outstanding Doctoral Fund in Ningbo University.
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