2018.3.31

Terahertz radiation in graphene hyperbolic medium excited by an electric dipole

Feng X, Gong S, Zhong R, et al. Terahertz radiation in graphene hyperbolic medium excited by an electric dipole.[J]. Optics Letters, 2018, 43(5):1187.

enhanced and directional radiation
numerical simulations and theoretical analyses
peak power flow
strongly concentrated in a narrow angle
the radiation fields can be manipulated
fields’ angular distributions can be tuned by
adjusting the dielectric permittivity and thickness of the substrates, and the chemical potential . developing miniature, integratable, highpower-density, and tunable radiation sources in the THz band at room temperature.