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Structural investigation of new tellurite glasses belonging to the TeO2-NbO2.5-WO3 system, and a study of their linear and nonlinear optical properties

Abstract : (189 words) The glass-forming domain, density, thermal, structural and optical properties of new glasses within the TeO2-NbO2.5-WO3 system have been investigated. By means of Raman spectroscopy, a thorough structural analysis of these glasses has been undertaken on the basis of a full-scale spectral decomposition process. The optical transmission window, refractive index dispersion and third-order nonlinear susceptibilities χ (3) were measured by UV-Vis-NIR spectroscopy, spectroscopic ellipsometry and Z-scan method respectively. Consistent correlations are successfully established between the measured structural, linear and nonlinear optical properties. In general, the structural features of the glass network are found to evolve mildly upon adding NbO2.5 or WO3. Nonetheless, a weak structural depolymerization of the Te-O-Te bond network as a result of adding NbO2.5 is evidenced and discussed in detail.
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Mohammed Reda Zaki, David Hamani, Maggy Dutreilh-Colas, Jean-René Duclere, Jonathan de Clermont-Gallerande, et al.. Structural investigation of new tellurite glasses belonging to the TeO2-NbO2.5-WO3 system, and a study of their linear and nonlinear optical properties. Journal of Non-Crystalline Solids, Elsevier, 2019, 512, pp.161-173. ⟨10.1016/j.jnoncrysol.2019.02.027⟩. ⟨hal-02361653⟩

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