中国物理B ›› 2024, Vol. 33 ›› Issue (3): 34213-034213.doi: 10.1088/1674-1056/acfdfe
Hong-Xia Yuan(袁红霞)1, Jia-Xue Li(李佳雪)1, Qi-Jun Ma(马奇军)1, Hai-Shan Tian(田海山)1, Yun-Yang Ye(叶云洋)2,†, Wen-Xin Luo(罗文昕)2, Xing-Hua Wu(吴杏华)3, and Le-Yong Jiang(蒋乐勇)1
Hong-Xia Yuan(袁红霞)1, Jia-Xue Li(李佳雪)1, Qi-Jun Ma(马奇军)1, Hai-Shan Tian(田海山)1, Yun-Yang Ye(叶云洋)2,†, Wen-Xin Luo(罗文昕)2, Xing-Hua Wu(吴杏华)3, and Le-Yong Jiang(蒋乐勇)1
摘要: 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.
中图分类号: (Optical bistability, multistability, and switching, including local field effects)