[Fluoride-oxide glass for high efficiency upconversion from IR to green]

In this paper, the fluoride-oxide glass doped with Er3+ for upconversion from IR to green was report. The component of sample in experiment is 60TeO2-8PbF2-10AlF3-10BaF2-10NaF-2ErO3/2, and the prepared method is obtained. The absorption spectrum was measured at room temperature. Intense green upconversion emissions from Er3+ doped the sample were observed under 808 nm and 970 nm excitation, and the upconversion emissions spectra under 808 nm and 970 nm LD excitation were measured at room temperature. The upconversion mechanics was discussed. The relationship between working currents of LD and intensity of upconversion emissions has been studied. The results was improved that needs of two photons for upconversion process under 808 nm and 970 nm excitation respectively.