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Erbium activated monolith silica-phosphate glasses planar waveguide and up-conversion mechanism
I.K. Battisha, M.A. Salem, A.M.S. Nahrawy, Y. Badr, B. Elouady, M. Kamal
International Journal of Nano and Biomaterials (IJNBM), 2009 Vol.2 No.1/2/3/4/5, pp.191 - 203
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