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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >A study of nonlinear optical properties in Bi2O3-WO3-TeO2 glasses
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A study of nonlinear optical properties in Bi2O3-WO3-TeO2 glasses

机译：Bi2O3-WO3-TeO2玻璃的非线性光学性质的研究

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A series of bismuth tungsten tellurite glasses were prepared and their densities, linear refractive indices and transmission spectra were measured. The optical bandgaps E-opt and Urbach energies E-e of glasses were obtained from ultraviolet absorption edges. Both the optical gap (E-opt) and the band tail (E-e) are behaving oppositely. As the value of E-opt decreases with increasing WO3 content, the degree of disorder increases which causes more defects or localized states resulting in deep localized in the bandgap with the tailing increased. Z-scan technique was carried out to investigate the third-order nonlinear optical properties of Bi2O3-WO3-TeO2 glasses. The third-order optical nonlinearity increases with decreasing the optical bandgap E-opt, since a increase of WO3 content can provide the non-bridging oxygen ion content. (c) 2008 Elsevier B.V. All rights reserved.
机译：制备了一系列铋钨碲酸盐玻璃，并测量了它们的密度，线性折射率和透射光谱。从紫外线吸收边缘获得眼镜的光学带隙E-opt和乌尔巴赫能E-e。光学间隙（E-opt）和带尾（E-e）都相反。随着E-opt的值随WO3含量的增加而降低，无序度也增加，这会导致更多的缺陷或局部状态，从而导致带隙深度深，拖尾增加。运用Z扫描技术研究了Bi2O3-WO3-TeO2玻璃的三阶非线性光学性质。三阶光学非线性随着光学带隙E-opt的减小而增加，因为WO3含量的增加可以提供非桥氧离子含量。 （c）2008 Elsevier B.V.保留所有权利。

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