Spectral properties of Eu 3+:B 2O 3–AlF 3–RF glasses

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Spectroscopic properties of Eu 3+ ions are studied in the following alkali fluoroborate glasses: B 2O 3–AlF 3–RF (where R=Li,Na,K). For these optical glasses, physical and non-linearity property parameters have been computed from their densities and refractive indices at 589.3 nm . On excitation with 395 nm these Eu 3+ glasses were found to be red fluorescent and the richness of the red colour was high in the Li + glass compared to the Na + and K + glass systems. The radiative properties of the fluorescent transitions of the Eu 3+ glasses can be understood by correlating the measured photoluminescence spectra with the Judd–Oflet intensity factors obtained from the recorded absorption spectra.