Studying the properties of Gd2O3–WO3–CaO–SiO2–B2O3 glasses doped with Tb3+

Abstract

The gadolinium tungsten calcium silicon borate glasses doped with Tb 3+ were prepared using the melt quenching technique to study physical, absorption and luminescence properties. The results show that doping with Tb 2 O 3 in high concentration makes the glass density tendency to increase. The absorption spectra indicate the photon absorption of Tb 3+ in the visible and near infrared ranges. The emission spectra of these glasses have been recorded under 275 nm (Gd 3+) and 377 nm (Tb 3+) excitation wavelengths, and it is has been observed that these glasses show bright green emission. From the emission spectra, Tb 3+ doped glasses perform the strongest emission with the wavelength 544 nm. The optimum concentration of Tb 3+ with the strongest emission in Gd 2 O 3-WO 3-CaO-SiO 2-B 2 O 3 is 1.50 mol.%. CIE 1931 chromaticity investigation shows that Tb 3+ doped glasses emit the light with yellowish green color. Tb 3+-doped glasses have the interesting potential to further development for using as laser medium in yellowish green solid-state lasers.