J-O spectral parameters of Er³⁺ ions in bismuth compound luminescent glass

Noble metal plasma can enhance luminescence of rare earth ion emitting crystal materials．In the present work, the absorption spectra of Er³⁺(0.5%)Ag(0.5%) bismuth compound luminescent glass in matrix 60 Bi₂O₃-20SiO₂-20Ga₂O₃ were measured．Spectral parameters (intensity, spontaneous emission rate, integral emission cross section and fluorescence branching ratio) of Er³⁺ in this matrix were analyzed based on J-O theory．Oscillator strength and three parameter \varOmega _\lambda \left( \lambda = 2,4,6 \right) fitting were used to calculate Er³⁺ integral emission cross section and fluorescence branch ratio, which were found to be quite large. These data suggest that Er³⁺ ions in matrix used in the present work emit strong luminescence．