Visible emission in Sm~(3+) and Tb~(3+) doped phosphate glass excited by UV radiation

摘要

In the article analysis of UV absorption and visible fluorescence of Sm~(3+) and Tb~(3+) ions doped phosphate glass with molar composition: 65P_2O_5 + 8Al_2O_3 + 10BaO + 17(Na_2O + MgO + ZnO) have been investigated. As a result of optical pumping fabricated glass with radiation from a deuterium lamp four luminescence bands were observed near to the wavelength of 600 nm for Sm~(3+) ions and 550 nm for Tb~(3+) ions. It was found that larger energy gap between laser and ground levels leads to the strongest emission in the visible range in terbium doped glasses than in glasses doped with samarium ions. Both fabricated glasses are characterized by the ability to selectively detect the radiation in the UV range.