A set of samples co-doped with Er and Ag were prepared with a combined sol-gel and ion-exchange route. This multistep process synthesizes samples in which the silver atoms are dispersed in the matrix and/or aggregated in Ag multimers or nanoclusters. The samples exhibit a different photoluminescence response depending on the sensitizing effect due to silver atoms. The spectroscopic properties were correlated with the structural properties investigated by extended x-ray absorption fine structure (EXAFS) spectroscopy and x-ray diffraction. The Er3+ excitation via energy transfer, obtained in a wide range of wavelengths, has been clearly related to the presence in the sample of Ag multimers.

Sensitizing effects in Ag-Er co-doped glasses for optical amplification

Enrichi, F.;
2004

Abstract

A set of samples co-doped with Er and Ag were prepared with a combined sol-gel and ion-exchange route. This multistep process synthesizes samples in which the silver atoms are dispersed in the matrix and/or aggregated in Ag multimers or nanoclusters. The samples exhibit a different photoluminescence response depending on the sensitizing effect due to silver atoms. The spectroscopic properties were correlated with the structural properties investigated by extended x-ray absorption fine structure (EXAFS) spectroscopy and x-ray diffraction. The Er3+ excitation via energy transfer, obtained in a wide range of wavelengths, has been clearly related to the presence in the sample of Ag multimers.
Ag-Er co-doped glass
optical amplification
energy transfer
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11562/1064659
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