Enhanced luminescence and energy transfer study in Tb:Sm codoped lead fluorotellurite glass

Spectroscopic properties of Sm(3+), Tb(3+) doped and Tb(3+):Sm(3+) co-doped lead fluorotellurite glasses have been studied in detail. On the excitation with 355 and 532 nm laser wavelengths, the luminescence properties of the singly and doubly doped glasses have been analyzed. Intensity of characteristic emission bands due to Sm(3+) ions is appreciably enhanced in the presence of Tb(3+) ions. This is due to the energy transfer from Tb(3+) to Sm(3+) ions. Different energy transfer parameters have also been calculated, which affirm an efficient energy transfer from Tb(3+) to Sm(3+) ions.