Abstract
Er 3+, Eu 3+ single-doped several glasses with various composition xB 2O 3–(80− x)TeO 2–10ZnO–10Na 2O ( x increases by a step of 10) were prepared by a melt-quenching technique. The effects of composition on density, molar volume, refractive index, and phonon sideband spectra were investigated. The dependence of glass structure properties on the composition was discussed. The influence of composition on the radiative and non-radiative relaxation rate, lifetime, and quantum efficiency of the level 4I 13/2 of Er 3+ in these various glasses were studied. Upon 980 nm excitation, the composition dependence of up-conversion and down-conversion emission was studied.
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