Controllable transition between optical bistability and multistability in graphene/dielectric/graphene structure

Liang Guo, Yifan He, Yihang Chen and Chengping Yin ()
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Liang Guo: Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University
Yifan He: Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University
Yihang Chen: Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University
Chengping Yin: Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University

The European Physical Journal B: Condensed Matter and Complex Systems, 2018, vol. 91, issue 5, 1-7

Abstract: Abstract We theoretically investigated the controllable transition between optical bistability and multistability in graphene/dielectric/graphene structure for TE and TM polarizations. We show such a transition strongly depends on the Fermi energy of graphene, and thus, it can be controlled by adjusting the gate voltage applied on the graphene. In addition, we also show that the transition can be tuned by changing the thickness and permittivity of the dielectric layer, or by varying the wavelength and the incident angle of the input light. Furthermore, three S-type curves appear in our studied structure, which result in quadristability. Our results may find potential applications in optoelectronic devices.

Keywords: Mesoscopic; and; Nanoscale; Systems (search for similar items in EconPapers)
Date: 2018
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DOI: 10.1140/epjb/e2018-80553-7

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