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Shi, S.-F; Zeng, B; Han, H.-L; Hong, X; Tsai, H.-Z; Jung, H. S; Zettl, A; Crommie, M. F; Wang, F
Nano letters, 01/2015, Letnik: 15, Številka: 1Journal Article
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.
