A study of nonlinear optical properties in Bi2O3-WO3-TeO2 glasses

被引：127

作者：

Chen, Yanfei ^{[1
]}

Nie, Qiuhua ^{[1
]}

Xu, Tiefeng ^{[1
]}

Dai, Shixun ^{[1
]}

Wang, Xunshi ^{[1
]}

Shen, Xiang ^{[1
]}

机构：

[1] Ningbo Univ, State Key Lab Base Novel Funct Mat & Preparat Sci, Fac Informat Sci & Engn, Ningbo 315211, Zhejiang, Peoples R China

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2008年 / 354卷 / 29期

基金：

中国国家自然科学基金;

关键词：

band structure; heavy-metal oxides; nonlinear optics; tellurites;

D O I：

10.1016/j.jnoncrysol.2008.03.005

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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.

引用

页码：3468 / 3472

页数：5

共 16 条

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