Effect of SiO₂ on the thermal stability and spectroscopic properties of Er³⁺-doped tellurite glasses

Abstract

Er³⁺-doped tellurite glass (TeO₂-ZnO-Na₂O) prepared using the conventional melt-quenching method is modified by introducing the SiO₂, and its effects on the thermal stability of glass host and the 1.53 μm band spectroscopic properties of Er³⁺ are investigated by measuring the absorption spectra, 1.53 μm band fluorescence spectra, Raman spectra and differential scanning calorimeter (DSC) curves. It is found that for Er³⁺-doped tellurite glass, besides improving its thermal stability, introducing SiO₂ is helpful for the further improvement of the fluorescence full width at half maximum (FWHM) and bandwidth quality factor. The results indicate that the prepared Er³⁺-doped tellurite glass containing an appropriate amount of SiO₂ has good prospect as a candidate of gain medium applied for 1.53 μm broadband amplifier.

Keywords

Glass Sample / Differential Scanning Calorimeter Curve / Tellurite Glass / Glass Host / Broadband Amplifier

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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 Scientific Research Foundation of Graduate School of Ningbo University (No.G13035), and the K. C. Wong Magna Fund and Hu Lan Outstanding Doctoral Fund in Ningbo University.