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|Type:||Artigo de periódico|
|Title:||Study of the optical properties of TeO2-PbO-TiO2 glass system|
|Author:||Cuevas, Raul F.|
Paula, Ana M. de
Cesar, Carlos L.
Barbosa, Luiz C.
Alves, Oswaldo L.
|Abstract:||We describe the preparation and some optical properties of high refractive index TeO2-PbO-TiO2 glass system. Highly homogeneous glasses were obtained by agitating the mixture during the melting process in an alumina crucible. The characterization was done by X-ray diffraction, Raman scattering, light absorption and linear refractive index measurements. The results show a change in the glass structure as the PbO content increases: the TeO4 trigonal bipyramids characteristics of TeO2 glasses transform into TeO3 trigonal pyramids. However, the measured refractive indices are almost independent of the glass composition. We show that third-order nonlinear optical susceptibilities calculated from the measured refractive indices using Lines' theoretical model are also independent of the glass composition.|
high refractive index glass
|Editor:||Sociedade Brasileira de Química|
|Citation:||Química Nova. Sociedade Brasileira de Química, v. 21, n. 3, p. 361-364, 1998.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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