Journal
OPTICS COMMUNICATIONS
Volume 261, Issue 1, Pages 65-70Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2005.11.056
Keywords
glass; optical properties; absorption; electronic polarizability; optical basicity
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In the present work different optical properties of xTiO(2)(60 - x)SiO2-40Na(2)O (wt%) optical glasses are determined. The characterization is done over a wide energy range, 0.41-6.2 eV. The refractive index and the extinction coefficient data are used to measure the absorption coefficient of the different glass compositions. Studying the LW-absorption edge, both direct and indirect allowed transitions with their optical energy gaps are carried out. In the same time, the Urbach energy is evaluated. From the extinction coefficient data, the Fermi energy of the glasses is calculated. The molar refraction, electronic polarizability and the optical basicity are obtained using the measured glass refractive indices. (C) 2005 Elsevier B.V. All rights reserved.
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