1 School of Physics and Electronics, Hunan Normal University, Changsha 410081, China; 2 School of Intelligent Manufacturing and Electronic Engineering, Wenzhou University of Technology, Wenzhou 325035, China; 3 Key Laboratory for Microstructural Functional Materials of Jiangxi Province, College of Science, Jiujiang University, Jiujiang 332005, China
Abstract Optical bistability (OB) is capable of rapidly and reversibly transforming a parameter of an optical signal from one state to another, and homologous nonlinear optical bistable devices are core components of high-speed all-optical communication and all-optical networks. In this paper, we theoretically investigated the controllable OB from a Fabry-Pérot (FP) cavity with a nonlinear three-dimensional Dirac semimetal (3D DSM) in the terahertz band. The OB stems from the third-order nonlinear bulk conductivity of the 3D DSM and the resonance mode has a positive effect on the generation of OB. This FP cavity structure is able to tune the OB because the transmittance and the reflectance can be modulated by the Fermi energy of the 3D DSM. We believe that this FP cavity configuration could provide a reference concept for realizing tunable bistable devices.
Fund: Project supported by the Wenzhou Major Science and Technology Innovation Project: Research and Industrialization of Key Technologies for Intelligent Dynamic Ultrahigh Pressure Microfluidizer (Grant No. ZG2023012), Wenzhou Major Science and Technology Innovation PR Project (Grant No. ZG2022011), the National Natural Science Foundation of China (Grant No. 62305254), the Scientific Research Fund of the Natural Science Foundation of Hunan Province (Grant No. 2022JJ30394), the Changsha Natural Science Foundation (Grant Nos. kq2202236 and kq2202246), and the Science and Technology Project of Jiangxi Provincial Education Department (Grant No. GJJ190911).
Corresponding Authors:
Yun-Yang Ye
E-mail: 20200285@wzu.edu.cn
Cite this article:
Hong-Xia Yuan(袁红霞), Jia-Xue Li(李佳雪), Qi-Jun Ma(马奇军), Hai-Shan Tian(田海山),Yun-Yang Ye(叶云洋), Wen-Xin Luo(罗文昕), Xing-Hua Wu(吴杏华), and Le-Yong Jiang(蒋乐勇) Controllable optical bistability in a Fabry-Pérot cavity with a nonlinear three-dimensional Dirac semimetal 2024 Chin. Phys. B 33 034213
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