title: Enhanced coupling of plasmons in hole arrays with periodic dielectric antennas.
abstract: We compare the angle-dependent transmission spectra of a metal hole array with dielectric pillars in each hole with that of a conventional metal hole array. The pillars enhance the optical transmission as well as the interaction between surface plasmon modes. This results in an observed splitting Delta omega/omega as large as 6%, at normal incidence, for the modes on the pillar side of the array.
authors.affiliation: Huygens Laboratory, Leiden University, PO Box 9504, 2300 RA Leiden, The Netherlands.
authors.forename: D
authors.initials: D
authors.lastname: Stolwijk
authors.forename: E F C
authors.initials: EF
authors.lastname: Driessen
authors.forename: M A
authors.initials: MA
authors.lastname: Verschuuren
authors.forename: G W
authors.initials: GW
authors.lastname: 't Hooft
authors.forename: M P
authors.initials: MP
authors.lastname: van Exter
authors.forename: M J A
authors.initials: MJ
authors.lastname: de Dood