Fluorescence properties and energy transfer mechanism of Sm3+ ion in lead telluroborate glasses

We report the fluorescence properties of Sm3+-doped lead telluroborate glasses of composition PbF2.TeO2.H3BO3.Sm2O3 as a function of Sm3+ concentration. A Judd–Ofelt scheme was used to determine the intensity parameters and radiative properties of Sm3+ ion. The emission and decay measurements were carried out at 402 nm excitation. Beyond 1.0 mol% Sm3+ concentration, the luminescence quenching is observed. The decay curves of 4G5/2 level are well fitted to a single exponential function. The evaluated radiative properties suggest that the 4G5/2 → 6H7/2 transition is responsible for reddish-orange luminescence which might be used in the development of visible lasers.

The PTBSm10 glass is a suitable candidate for reddish-orange laser applicationsFigure optionsDownload high-quality image (68 K)Download as PowerPoint slideHighlights
► The PTB glasses are suitable for high quality glasses with low OH content.
► PTBSm glasses emit intense reddish-orange luminescence at 402 nm excitation.
► Energy transfer occurs at higher concentrations via cross relaxation mechanism.
► The PTBSm10 glass is a suitable candidate for reddish-orange laser applications.