title: Propagation of spoof surface plasmon on metallic square lattice: bending and splitting of self-collimated beams.
abstract: The propagation characteristics of spoof surface plasmon modes are studied in both real and reciprocal spaces. From the metallic square lattice, we obtain constant frequency contours by directly measuring electric fields in the microwave frequency regime. The anisotropy of the measured constant frequency contour supports the presence of the negative refraction and the self-collimation which are confirmed from measured electric fields. Additionally, we demonstrate the spoof surface plasmon beam splitter in which the splitting ratio of the self-collimated beam is controlled by varying the height of rods.
authors.forename: Kap-Joong
authors.initials: KJ
authors.lastname: Kim
authors.forename: Jae-Eun
authors.initials: JE
authors.lastname: Kim
authors.forename: Hae Yong
authors.initials: HY
authors.lastname: Park
authors.forename: Yong-Hee
authors.initials: YH
authors.lastname: Lee
authors.forename: Seong-Han
authors.initials: SH
authors.lastname: Kim
authors.forename: Sun-Goo
authors.initials: SG
authors.lastname: Lee
authors.forename: Chul-Sik
authors.initials: CS
authors.lastname: Kee