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Optical switching and beam steering with a graphene-based hyperprism

  • School of Physics, Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

It is well established that the topological transition of the iso-frequency surface (IFS) of hyperbolic metamaterials from the ellipsoid to hyperboloid provides unique capabilities for controlling the propagation of the wave. Here, we present a graphene-based hyperprism (GHP) structure that uses an electronically controlled modulation strategy to achieve optical switching and wide-angle beam steering functions. Numerical simulation results show that, by regulating the chemical potential of GHP, the optical switching system can achieve high transmission (97%) and zero transmission, as well as the beam steering system can reach a maximum adjustable angle of 52.94°. Furthermore, the effects of Fermi energy and relaxation time on transmittance are also investigated. These works may provide new opportunities for applications such as optical data storage, modulators, and integrated photonic circuits.

Original languageEnglish
Pages (from-to)854-863
Number of pages10
JournalOSA Continuum
Volume3
Issue number4
DOIs
StatePublished - 15 Apr 2020
Externally publishedYes

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