Spectroscopic characterization and optical waveguide fabrication in CE~(3+), Tb~(3+)and CE~(3+)/Tb~(3+) doped zinc-sodium-aluminosilicate glasses;

摘要

A spectroscopy investigation of CE~(3+) and Tb~(3+) ions in sodium-zinc-aluminosilicate glasses is performed using the photoluminescence technique. Blue-white light, with x = 0.24 and y = 0.24 CIE chromaticity coordinates, is obtained for the Tb~(3+) singly-doped glass excited at 351 nm. When the sodium-zinc-aluminosilicate glass is co-doped with CE~(3+) and Tb~(3+) a non-radiative energy transfer from CE~(3+) to Tb~(3+) ions is observed upon 320 nm excitation. From an analysis of the cerium emission decay curve, the CE~(3+) → Tb~(3+) energy transfer microscopic parameter and efficiency are obtained. Different concentrations of CE~(3+) and Tb~(3+) ions in the glass host gives rise to blue and blue-green emissions, with different CIE coordinates. Optical waveguides were produced in the samples by Ag~+-Na~+ ion-exchange, and their characterization is presented.