Temperature and wavelength dependence of the thermo-optical properties of tellurite and chalcogenide glasses
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
01/10/2007
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Resumo |
The refractive index and the temperature coefficient of the optical path length change of tellurite (80TeO(2):20Li(2)O) and chalcogenide glasses (72.5Ga(2)S(3):27.5La(2)O(3)) were determined as a function of temperature (up to 150 degrees C) and wavelength (in the range between 454 and 632.8 nm). The tellurite glass exhibits the usual refractive index dispersion in the wavelength range analyzed, while anomalous refractive index dispersion was observed for the chalcogenide glass between 454 and 530 nm. The dispersion parameters were determined by means of the single-effective oscillator model. In addition, a strong dependence of the temperature coefficient of the optical path length on the photon energy and temperature was found for the chalcogenide glass. The latter was correlated to the shift of the optical band gap (or electronic edge) with temperature, which was interpreted by the electron-phonon interaction model. (C) 2007 American Institute of Physics. |
Formato |
6 |
Identificador |
http://dx.doi.org/10.1063/1.2786033 Journal of Applied Physics. Melville: Amer Inst Physics, v. 102, n. 7, 6 p., 2007. 0021-8979 http://hdl.handle.net/11449/38563 10.1063/1.2786033 WOS:000250147700027 WOS000250147700027.pdf |
Idioma(s) |
eng |
Publicador |
American Institute of Physics (AIP) |
Relação |
Journal of Applied Physics |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |