Abstract
The Cherenkov plasmonic radiation in/parallel graphene plane is demonstrated theoretically. It is shown that the graphene Cherenkov radiation can be excited by a moving electron at a relative lower speed, which greatly reduces the difficulty for the Cherenkov radiation realization due to the low phase velocity and high field confinement of graphene plasmons. The excited graphene plasmons wavelength and the Cherenkov radiation angle can be dynamically changed by varying the Femi energy levels, which provides a versatile, tunable mechanism for plasmonic Cherenkov effect in active integrated photonic applications.
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