Third-order optical nonlinearity properties of CdCl2-modifed Ge–Sb–S chalcogenide glasses

被引：0

作者：

Lu X. ^{[1
]}

Li J. ^{[1
]}

Yang L. ^{[1
]}

Zhang R. ^{[1
]}

Zhang Y. ^{[1
]}

Ren J. ^{[1
]}

Galca A.C. ^{[2
]}

Secu M. ^{[2
]}

Farrell G. ^{[3
]}

Wang P. ^{[1
,4
]}

机构：

[1] Key Lab of In-fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin

[2] National Institute of Materials Physics, Laboratory of Multifunctional Materials and Structures, 105bis Atomistilor Street, PO Box MG—36, Magurele

[3] Photonics Research Centre, Technological University Dublin, Kevin Street

[4] Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen

来源：

Journal of Non-Crystalline Solids | 2021年 / 528卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Chalcohalide glasses; Third-order optical nonlinearity; Two-photon absorption; Z-scan technique;

D O I：

10.1016/j.jnoncrysol.2019.119757

中图分类号：

学科分类号：

摘要：

We developed a new type of chalcohalide glasses with physicochemical and nonlinear optical properties that are tunable by composition. It is found that more than 60 mol.% CdCl2 heavy metal halide can be dissolved into the ternary Ge–Sb–S system and forming stable glasses. The visible-light transparency range is extended to shorter wavelengths with the addition of CdCl2, which is beneficial for the optical quality control and infra-red (IR) system alignment. The third-order optical nonlinearity (TONL) is studied using the femtosecond Z-scan method. The results show that both the nonlinear refractive index and two photon absorption co-efficient decrease with CdCl2. Benefiting from the favorable property-tailoring effects of CdCl2, the TONL figure of merit (FOM) can be improved to meet the requirement (FOM < 1) for all-optical switching and IR photonic applications. © 2019 Elsevier B.V.

引用

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