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A combination of continuous wave optical illumination and electrical gating leads to a giant active modulation (∼61%) of terahertz waves in a graphene-silicon hybrid metamaterial at extremely low gate bias voltages (1 V). The highly tunable characteristics of the graphene metamaterial device under electrical bias and optical illumination open up new avenues for graphene-based high performance integrated...
We show an electric control of metamaterial-induced transparency through active tuning of the dark mode. By hybridizing gated graphene with diatomic metamaterials, the transparency window switching is obtained at a frequency of 0.85 THz.
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