Journal
OPTICS LETTERS
Volume 47, Issue 8, Pages 2125-2128Publisher
Optica Publishing Group
DOI: 10.1364/OL.456690
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Funding
- National Natural Science Foundation of China [11774088]
- Scientific Research Fund of Hunan Provincial Education Department [21B0048, 21B0253]
- Changsha Natural Science Foundation [kq2202236]
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In this study, we investigate the low-threshold optical bistability of transmitted beams at the terahertz range using a photonic crystal Fabry-Perot cavity with graphene. Graphene with strong nonlinear conductivity is placed in the middle of the Fabry-Perot cavity, and the resonance of the cavity plays a positive role in promoting the low-threshold optical bistability. The optical bistability curve is closely related to the incident angle of light, the parameters of graphene, and the structural parameters of the Fabry-Perot cavity.
We investigate the low-threshold optical bistability of transmitted beams at the terahertz range based on the photonic crystal Fabry-Perot cavity with graphene. Graphene with strong nonlinear conductivity is placed in the middle of the Fabry-Perot cavity and the resonance of the cavity plays a positive role in promoting the low-threshold optical bistability. The optical bistability curve is closely related to the incident angle of light, the parameters of graphene, and the structural parameters of the Fabry-Perot cavity. Through parameter optimization, optical bistability with threshold of 10(5) V/m can be obtained, which has reached or is close to the range of the weak field. (C) 2022 Optica Publishing Group
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