Erbium activated monolith silica-phosphate glasses planar waveguide and up-conversion mechanism
by I.K. Battisha, M.A. Salem, A.M.S. Nahrawy, Y. Badr, B. Elouady, M. Kamal
International Journal of Nano and Biomaterials (IJNBM), Vol. 2, No. 1/2/3/4/5, 2009

Abstract: The structure of 3% of Er⁺³, Yb⁺³ ions doped silica-phosphate of two different concentrations 5 and 10% phosphate (P), in the form of thin film and monolith materials were studied using X-ray diffraction (XRD) and Fourier transform infrared (FTIR). The types of structural information obtainable are compared in detail. The structural study revealed that the crystallite sizes of monolith silica-phosphate were about 19 and 17.6 nm sintered at 900 and 500°C. The coarse and fine microstructure of monolith prepared samples was depicted by transmission electron microscope (TEM), which revealed the presence of nano-structure scale in the prepared samples, confirming the data obtained from the XRD. The silica-phosphate doped with 3% of Er⁺³ and Yb⁺³ ions waveguides and its cooperative up-conversion were characterised by photoluminescence spectroscopy. Photoluminescence spectroscopy has demonstrated the embedding of Er³⁺ and Yb³⁺ ions in the nanocrystals, He-Cd and laser diodes were used for both mechanisms, respectively.

Online publication date: Sat, 08-Aug-2009

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