title: Babinet-inverted optical Yagi-Uda antenna for unidirectional radiation to free space.
abstract: Nanophotonics capable of directing radiation or enhancing quantum-emitter transition rates rely on plasmonic nanoantennas. We present here a novel Babinet-inverted magnetic-dipole-fed multislot optical Yagi-Uda antenna that exhibits highly unidirectional radiation to free space, achieved by engineering the relative phase of the interacting surface plasmon polaritons between the slot elements. The unique features of this nanoantenna can be harnessed for realizing energy transfer from one waveguide to another by working as a future "optical via".
authors.affiliation: Samsung Advanced Institute of Technology , Yongin-si, Gyeonggi-do 446-712, Republic of Korea.
authors.forename: Jineun
authors.initials: J
authors.lastname: Kim
authors.forename: Young-Geun
authors.initials: YG
authors.lastname: Roh
authors.forename: Sangmo
authors.initials: S
authors.lastname: Cheon
authors.forename: Jong-Ho
authors.initials: JH
authors.lastname: Choe
authors.forename: Jongcheon
authors.initials: J
authors.lastname: Lee
authors.forename: Jaesoong
authors.initials: J
authors.lastname: Lee
authors.forename: Heejeong
authors.initials: H
authors.lastname: Jeong
authors.forename: Un Jeong
authors.initials: UJ
authors.lastname: Kim
authors.forename: Yeonsang
authors.initials: Y
authors.lastname: Park
authors.forename: In Yong
authors.initials: IY
authors.lastname: Song
authors.forename: Q-Han
authors.initials: QH
authors.lastname: Park
authors.forename: Sung Woo
authors.initials: SW
authors.lastname: Hwang
authors.forename: Kinam
authors.initials: K
authors.lastname: Kim
authors.forename: Chang-Won
authors.initials: CW
authors.lastname: Lee