Optical bistability induced by nonlinear surface plasmon polaritons in graphene in terahertz regime

We demonstrate optical bistability in a prism-air-graphene-dielectric structure. Under a moderate electric field in the terahertz frequency regime, the third order nonlinear optical conductivity is comparable to the linear conductivity. The nonlinear conductivity enhances the energy of surface plasm...

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Published in:Applied physics letters 2015-11, Vol.107 (20)
Main Authors: Sanderson, Matthew, Ang, Yee Sin, Gong, Sen, Zhao, Tao, Hu, Min, Zhong, Renbin, Chen, Xiaoxing, Zhang, Ping, Zhang, Chao, Liu, Shenggang
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Language:English
Subjects:
Applied physics
Dependence
Graphene
Optical bistability
Polaritons
Reflectance
Terahertz frequencies
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cited_by cdi_FETCH-LOGICAL-c358t-1fca9287e9dde6f674ad84ba53625bfe226a3f9bbe48f97f8057fabc48bafcca3
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container_issue 20
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container_title Applied physics letters
container_volume 107
creator Sanderson, Matthew
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description We demonstrate optical bistability in a prism-air-graphene-dielectric structure. Under a moderate electric field in the terahertz frequency regime, the third order nonlinear optical conductivity is comparable to the linear conductivity. The nonlinear conductivity enhances the energy of surface plasmon polaritons. Both the energy and frequency of the surface plasmon polaritons depend on the strength of the nonlinear current in the graphene layer. When considering excitation in the Kretschmann configuration, the reflectance as a function of frequency exhibits bistability. The origin of the bistability is the field dependence of the plasmon mode. We have determined the parameter regime for the occurrence of bistability in this structure.
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source American Institute of Physics (AIP) Publications; American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list)
subjects Applied physics
Dependence
Graphene
Optical bistability
Polaritons
Reflectance
Terahertz frequencies
title Optical bistability induced by nonlinear surface plasmon polaritons in graphene in terahertz regime
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