Optimizing Broadband Terahertz Modulation with Hybrid Graphene/Metasurface Structures
Optimizing Broadband Terahertz Modulation with Hybrid Graphene/Metasurface Structures
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 …