Luminescence Properties of Magnesium Phosphate Glass Doped Samarium

Samarium doped magnesium phosphate glass having a composition of [P2O5](50-x)-[MgO](50)-[Sm2O3](x), with 0 <= x <= 4 mol% were prepared by melt-quenching method. The emission spectra were recorded using the photoluminescence spectrometer in the range of 540-730 nm at room temperature after being excited at 403 nm. It was found that the emission spectrum of Sm(3+)consisted of four emission bands at similar to 559.76 nm, similar to 597.32 nm, similar to 641.55 nm and similar to 705.57 nm which were assign as a transition of (4)G(5/2)-> H-6(5/2), (4)G(5/2) -> H-6(7/2), (4)G(5/2) -> H-6(9/2) and (4)G(5/2)-> H-6(1/2) respectively. The transition of (4)G(5/2)-> H-6(7/2) is detected as the strongest orange (597.32 nm) luminescence peaks thus dominates the transition.