title: Excitation and active control of propagating surface plasmon polaritons in graphene.
abstract: We demonstrate the excitation and gate control of highly confined surface plasmon polaritons propagating through monolayer graphene using a silicon diffractive grating. The normal-incidence infrared transmission spectra exhibit pronounced dips due to guided-wave resonances, whose frequencies can be tuned over a range of ~80 cm(-1) by applying a gate voltage. This novel structure provides a way to excite and actively control plasmonic waves in graphene and is thus an important building block of graphene plasmonic systems.
authors.affiliation: Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States.
authors.forename: Weilu
authors.initials: W
authors.lastname: Gao
authors.forename: Gang
authors.initials: G
authors.lastname: Shi
authors.forename: Zehua
authors.initials: Z
authors.lastname: Jin
authors.forename: Jie
authors.initials: J
authors.lastname: Shu
authors.forename: Qi
authors.initials: Q
authors.lastname: Zhang
authors.forename: Robert
authors.initials: R
authors.lastname: Vajtai
authors.forename: Pulickel M
authors.initials: PM
authors.lastname: Ajayan
authors.forename: Junichiro
authors.initials: J
authors.lastname: Kono
authors.forename: Qianfan
authors.initials: Q
authors.lastname: Xu