Samarium fluorescence efficiency in high mass density borate glasses

A series of Sm3+-doped lead borate glasses with a lead oxide content varying from 20 mol% to 80 mol% is investigated. Raman spectroscopy was used to investigate the influence of the network modifier content on the glass structure, in particular, on the phonon spectrum of the different lead borate glasses. In addition to the significant changes in the glass structure, the lead doping also has a significant influence on the fluorescence properties of Sm3+ co-doped glasses.

► Structural changes in lead borate glasses studied by Raman spectroscopy.
► Tunable intrinsic fluorescence in lead borate glasses.
► Energy transfer between the network modifier Pb2+ and Sm3+.
► Cut-off energy shifts with increasing PbO content.