18 August 2004 Sensitizing effects in Ag-Er codoped glasses for optical amplification
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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 sytnthesizes samples in which the silver atoms are dispersed in the matrix and/or aggregated in Ag multimers or nanoclusters. The samples exhibit a different photo-luminescence 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.
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Paolo Mazzoldi, S. Padovani, F. Enrichi, G. Mattei, Cinzia Sada, E. Trave, Massimo Guglielmi, Alessandro Martucci, Giancarlo Battaglin, E. Cattaruzza, Francesco Gonella, C. Maurizio, "Sensitizing effects in Ag-Er codoped glasses for optical amplification", Proc. SPIE 5451, Integrated Optics and Photonic Integrated Circuits, (18 August 2004); doi: 10.1117/12.549912; https://doi.org/10.1117/12.549912
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