2012/09/10 by Choon How Gan
Engineering · Materials Science · Physics and Astronomy · #Conductivity #Doping #Excitation #Graphene #Localized surface plasmon #Materials science #Metamaterials and Metasurfaces Applications #Nanotechnology #Optics #Optoelectronics #Photonic Crystals and Applications #Physics #Plasmon #Plasmonic and Surface Plasmon Research #Prism #Surface conductivity #Surface plasmon #Terahertz radiation #cond-mat.mes-hall #physics.optics
paper · pdf · doi:10.1063/1.4752465
published as Appl. Phys. Lett. 101, 111609 (2012)
openalex publication_date 2012/09/10 · arxiv created 2013/03/03 · arxiv updated 2013/03/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Excitation of surface plasmons supported by doped graphene sheets at terahertz frequencies is investigated numerically. To alleviate the momentum mismatch between the highly confined plasmon modes and the incident radiation, it is proposed to increase the surface conductivity of graphene through high doping levels or with few-layer graphene. For currently achievable doping levels, our analysis shows that surface plasmons on monolayer graphene may be excited at operating frequencies up to about 10 THz (∼41.3 meV) with a high-index coupling prism, and higher frequencies/energies are possible for few-layer graphene. These highly confined surface modes are promising for sensing and waveguiding applications in the terahertz regime.