期刊论文

Peng, Yuxiang;He, MD

英文

Coatings

2079-6412

2023

13

5

936-

10.3390/coatings13050936

Conceptualization, formal analysis and writing—original draft, F.L., J.X. and Y.P.; writing—original draft preparation, F.L., J.L. and Y.P.; data curation and funding acquisition, Y.P. and M.H.; project administration and supervision, Y.P. and M.H.; data analysis and writing—review and editing, F.L., J.X., Y.P. and M.H. All authors have read and agreed to the published version of the manuscript. This work was supported by the Natural Science Foundation of Hunan Province of China (grant no. 2020JJ4935), and Scientific Research Fund of Hunan Provincial Education Department (grant no. 21B0253).

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In this paper, we investigate theoretically the tunable low threshold optical bistability (OB) in the terahertz range based on photonic crystals’ Fabry–Perot (FP) cavity with a three-dimensional Dirac semimetal (3D DSM). On the one hand, a 3D DSM with a high nonlinear refractive index coefficient creates conditions for the generation of OB. Additionally, the finite film thickness of 3D DSMs leads to significantly a enhanced interaction volume compared to graphene, which allows easier preparation and has stable properties. On the other hand, t...