STUDY OF UPCONVERSION LUMINESCENCE IN Tm 3+ Doped PWG GLASSES

In this paper, fabrications of GeO 2 PbF 2 WO 3 Tm 2O 3 glasses were studied. The Raman spectra of different samples have been measured. In this system an efficient pumped wavelength for upconversion emission was confirmed, and their upconversion emissions by 650nm pumped by 650nm were observed at room temperature.