A spectroscopic investigation of sodium-zinc-aluminosilicate glasses activated with Sm3+ and Tb3+/Sm3+ ions is performed through their luminescence spectra and decay times. Yellowish-green light emission, with x = 0.37 and y = 0.58 CIE chromaticity coordinates, is obtained in the Tb3+/Sm3+ codoped glass excited at 318 nm. Such yellowish-green emission is generated by the simultaneous emission of Tb3+ and Sm3+ ions, samarium being sensitized by the terbium through a non-radiative energy transfer. From spectroscopic data it is inferred that this energy transfer takes place between Tb3+ and Sm3+ clusters through a short-range interaction mechanism. Optical waveguides are also effectively produced in the glasses by Ag+-Na+ ion exchange.
Optical spectroscopy and waveguide fabrication in Sm3+/Tb3+ doped zinc-sodium-aluminosilicate glasses
SPEGHINI, Adolfo;BETTINELLI, Marco Giovanni;
2012-01-01
Abstract
A spectroscopic investigation of sodium-zinc-aluminosilicate glasses activated with Sm3+ and Tb3+/Sm3+ ions is performed through their luminescence spectra and decay times. Yellowish-green light emission, with x = 0.37 and y = 0.58 CIE chromaticity coordinates, is obtained in the Tb3+/Sm3+ codoped glass excited at 318 nm. Such yellowish-green emission is generated by the simultaneous emission of Tb3+ and Sm3+ ions, samarium being sensitized by the terbium through a non-radiative energy transfer. From spectroscopic data it is inferred that this energy transfer takes place between Tb3+ and Sm3+ clusters through a short-range interaction mechanism. Optical waveguides are also effectively produced in the glasses by Ag+-Na+ ion exchange.
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