Abstract

Ce3+ and B2O3 are introduced into erbium-doped Bi2O3SiO2 glass to enhance the luminescence emission and optic spectra characters of Er3+. The energy transfer from Er3+ to Ce3+ will obviously be improved with the phonon energy increasing by the addition of B2O3. Here, the nonradiative rate, the lifetime of the I1124I1324 transition, and the emission intensity and bandwidth of the 1.5μm luminescence with the I1324I1524 transition of Er3+ are discussed in detail. The results show that the optical parameters of Er3+ in this bismuth–borate–silicate glass are nearly as good as that in tellurite glass, and the physical properties are similar to those in silicate glass. With the Judd–Ofelt and nonradiative theory analyses, the multiphonon decay and phonon-assisted energy-transfer (PAT) rates are calculated for the Er3+Ce3+ codoped glasses. For the PAT process, an optimum value of the glass phonon energy is obtained after B2O3 is introduced into the Er3+Ce3+ codoped bismuth–silicate glasses, and it much improves the energy-transfer rate between Er3+I1124I1324 and Ce3+F522F722, although there is an energy mismatch.

© 2007 Optical Society of America

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