铋改性硅酸铅玻璃的线性和非线性光学特性

IF 2.8 3区 材料科学 Q3 CHEMISTRY, PHYSICAL
Silicon Pub Date : 2024-09-19 DOI:10.1007/s12633-024-03139-w
Rajni Bala, Sujata Sanghi, Ashish Agarwal, Saroj Rani, Sanjay Gaur
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引用次数: 0

摘要

采用经典的熔融-淬火技术制备了铋改性硅酸铅玻璃,其成分为 20PbO∙(80-x)Bi2O3∙xSiO2 (10 ≤ x ≤ 40 mol%)。密度(D)、结晶体积(VC)和摩尔体积(VM)值随铋浓度的降低而降低。傅立叶变换红外光谱表明形成了[BiO3]、[BiO6]、[SiO4]、[PbO3]和[PbO4]结构单元。所研究的玻璃成分的光带隙(Eg)值在 1.93 至 2.12 eV 之间,而它们的厄巴赫能(ΔE)值在 0.14 至 0.24 eV 之间。平均电子氧化物极化率(2.84-1.62 Å3)和光学碱度(1.08-0.64)值的降低预示着玻璃网络中 SiO2 的加入会增加 Bi-O 键的共价性质。小金属化标准(0.311 至 0.325)预示着所制备系列适合用作非线性光学材料。利用 Z 扫描方法确定了三阶非线性光学特性,包括非线性吸收系数 (α2)、非线性电感 (χ(3)) 和非线性折射率 (η2)。光学研究表明,随着 Bi2O3 含量的减少,非桥氧原子(NBOs)的减少导致带隙增大,非线性折射率下降。制备的玻璃的光学极限研究还报告了动态范围(DR)和极限阈值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Linear and Nonlinear Optical Characteristics of Bismuth-Modified Lead-Silicate Glasses

Bismuth-modified lead silicate glasses with composition 20PbO∙(80-x)Bi2O3∙xSiO2 (10 ≤ x ≤ 40 mol%) were fabricated by classical melt-quench technique. The density (D), crystalline volume (VC), and molar volume (VM) values decrease with a decrease in bismuth concentration. FTIR spectra suggest the formation of [BiO3], [BiO6], [SiO4], [PbO3], and [PbO4] structural units. The optical band gap (Eg) values for the studied glass composition are determined to be between 1.93 and 2.12 eV, while their Urbach energy (∆E) values fall between 0.14 and 0.24 eV. A decrease in values of average electronic oxide polarizability (2.84‒1.62 Å3), and optical basicity (1.08‒0.64), predict the increase in the covalence nature of the Bi-O bond with the incorporation of SiO2 in the glass network. The small metallization criterion (0.311 to 0.325) predicts the suitability of the prepared series to be utilized as nonlinear optical materials. The Z-scan approach was utilized to determine the third-order nonlinear optical characteristics, including the nonlinear absorption coefficient (α2), nonlinear susceptibility (χ(3)), and nonlinear refractive index (η2). Optical studies reveal that with the decrease in Bi2O3 content, nonbridging oxygens (NBOs) decrease leads to an increase in bandgap and a drop in the nonlinear refractive index. The dynamic range (DR) and limiting threshold values have also been reported from the optical limiting studies of the prepared glasses.

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来源期刊
Silicon
Silicon CHEMISTRY, PHYSICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
5.90
自引率
20.60%
发文量
685
审稿时长
>12 weeks
期刊介绍: The journal Silicon is intended to serve all those involved in studying the role of silicon as an enabling element in materials science. There are no restrictions on disciplinary boundaries provided the focus is on silicon-based materials or adds significantly to the understanding of such materials. Accordingly, such contributions are welcome in the areas of inorganic and organic chemistry, physics, biology, engineering, nanoscience, environmental science, electronics and optoelectronics, and modeling and theory. Relevant silicon-based materials include, but are not limited to, semiconductors, polymers, composites, ceramics, glasses, coatings, resins, composites, small molecules, and thin films.
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