UV-excitation-induced luminescence of oxide glasses doped with rare-earth elements

Abstract

Fluorescence properties of silicate glasses doped with rare-earth ions have been examined with excitation at 254nm, which corresponds to the wavelength of emission line observed for Hg. Among rare-earth ions, Gd³⁺ and Tb³⁺ exhibit relatively intense emission. When the concentration of Gd³⁺ is low, the emission intensity is apt to propotionally increase with an increase in the Gd³⁺ content, whereas the emisson intensity tends to be saturated at higher concentration of Gd³⁺ such as 5mol%.