Akademik Veri Yönetim Sistemi
4th International Conference on Optical, Optoelectronic and Photonic Materials and Applications (ICOOPMA), Budapest, Macaristan, 15 - 20 Ağustos 2010, cilt.8, ss.2625-2628
A type of thulium doped tellurite based optical glasses was prepared through conventional melt quenching technique. In the experiments, the effect of different Tm3+ ion concentration and glass composition on optical properties of (TeO2)((1-x-y))(Nb2O5)((x))(TiO2)((y)) (x=0.05, 0.10, 0.15, and 0.20 mol) glasses have been investigated by using UV-VIS-NIR optical spectrophotometry measurements in a wavelength range 400-2000 nm. Considering absorption measurements for the 1.0mol% Tm3+ doped of (TeO2)(0.9)(Nb2O5)(0.05)(TiO2)(0.05) glass, 1G4, 3F2, 3F3, 3F4, 3H5, and 3H4 absorption bands were observed from the 3H6 ground level, at 463, 660, 687, 793, 1211 and 1700 nm wavelengths, respectively. Furthermore, spontaneous emission probabilities, and the radiative lifetimes for the 4f-4f transitions of the Tm3+ ions were calculated. The spectral intensities were determined in terms of Judd-Ofelt parameters (O-2, O-4, O-6). Luminescence analysis was realized for the different Tm3+ ion concentration (0.002, 0.005 and 0.01mol) at room temperature. The luminescence band intensity of the F-3(4) -> H-3(4) transition was measured as a function of Tm3+ ion concentration (0.002, 0.005 and 0.01mol). Furthermore, luminescence data of the thulium doped glass samples were used to determine the compositional dependence of the emission cross sections at 1470 nm (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)