title: Tunable bulk polaritons of graphene-based hyperbolic metamaterials.
abstract: The tunable hyperbolic metamaterial (HMM) based on the graphene-dielectric layered structure at THz frequency is presented, and the surface and bulk polaritons of the graphene-based HMM are theoretically studied. It is found that the dispersions of the polaritons can be tuned by varying the Fermi energy of graphene sheets, the graphene-dielectric layers and the layer number of graphene sheets. In addition, the highly confined bulk polariton mode can be excited and is manifested in an attenuated total reflection configuration as a sharp drop in the reflectance. Such properties can be used in tunable optical reflection modulation with the assistance of bulk polaritons.
authors.forename: Liwei
authors.initials: L
authors.lastname: Zhang
authors.forename: Zhengren
authors.initials: Z
authors.lastname: Zhang
authors.forename: Chaoyang
authors.initials: C
authors.lastname: Kang
authors.forename: Bei
authors.initials: B
authors.lastname: Cheng
authors.forename: Liang
authors.initials: L
authors.lastname: Chen
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Yang
authors.forename: Jian
authors.initials: J
authors.lastname: Wang
authors.forename: Weibing
authors.initials: W
authors.lastname: Li
authors.forename: Baoji
authors.initials: B
authors.lastname: Wang