Optimizing Broadband Terahertz Modulation with Hybrid Graphene/Metasurface Structures

Abstract

We demonstrate efficient terahertz (THz) modulation by coupling graphene strongly with a broadband THz metasurface device. This THz metasurface, made of periodic gold slit arrays, shows near unity broadband transmission, which arises from coherent radiation of the enhanced local-field in the slits. Utilizing graphene as an active load with tunable conductivity, we can significantly modify the local-field enhancement and strongly modulate the THz wave transmission. This hybrid device also provides a new platform for future nonlinear THz spectroscopy study of graphene.

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Cited by in corpus (8)

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• Theory of Radiation Pressure on a Diffractive Solar Sail
• Recent advances in terahertz photonic technologies based on graphene and their applications
• Nanoantenna Enhanced Terahertz Interaction of Biomolecules
• Polarization-controlled non-Hermitian metasurfaces for ultra-sensitive terahertz sensing