Abstract
The transformation of normally incident electromagnetic wave into propagating plasmon in periodical graphene structure with double grating gate is theoretically investigated. The most effective transformation appears in case of excitation plasmon modes with the wavevectors quantized with structure period. Blocking the reflection and the transmission of electromagnetic wave through the graphene structure by metal back gate and Fabry-Perot resonator are used. We found the 72% transformation of the incident wave radiation power into the power of unidirectionally-travelling plasmon for 1 ps momentum relaxation time in graphene.
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