[15p-P1-1~11] 3.9 Terahertz technologies

[15p-P1-2] Radiation induced by graphene surface plasmon polaritons

〇Dazhi Li¹, Makoto Nakajima², Masaki Hashida³ (1.ILT, 2.ILE, 3.ICR)

Keywords:Graphene, THz radiation

We presents an approach to extract terahertz radiation from surface plasmon polaritons excited in the surface of a uniform graphene structure by an electron beam. A sidewall configuration is proposed to lift the surface plasmon mode to be close to the light line, so that some of its harmonics have chances to go above the light line and become radiative. The physical mechanism in this scheme is analyzed with three-dimensional theory and demonstrated through numerical calculations.