Controllable optical bistability in a Fabry–Pérot cavity with a nonlinear three-dimensional Dirac semimetal

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 theoretical...

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Published inChinese physics B Vol. 33; no. 3; pp. 34213 - 498
Main Authors Yuan, Hong-Xia, Li, Jia-Xue, Ma, Qi-Jun, Tian, Hai-Shan, Ye, Yun-Yang, Luo, Wen-Xin, Wu, Xing-Hua, Jiang, Le-Yong
Format Journal Article
LanguageEnglish
Published Chinese Physical Society and IOP Publishing Ltd 01.03.2024
Subjects
Dirac semimetal
Fabry-Pérot cavity
optical bistability
optical bistability
Dirac semimetal
Fabry-Pérot cavity
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ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/acfdfe

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Summary: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.
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/acfdfe