title: Fluorescence enhancement by surface gratings.
abstract: Fluorescence from a layer of Rhodamine 6G (R6G) is observed to be enhanced strongly if a dielectric grating deposited onto a gold film is used as a substrate. The fluorescence enhancement has been studied as a function of the grating periodicity and the angle of incidence of the excitation light. The enhancement mechanism is consistent with excitation of surface-plasmon-polaritons on the metal film surface. The observed phenomenon may be promising in sensing applications.
authors.forename: Yu-Ju
authors.initials: YJ
authors.lastname: Hung
authors.forename: Igor I
authors.initials: II
authors.lastname: Smolyaninov
authors.forename: Christopher C
authors.initials: CC
authors.lastname: Davis
authors.forename: Hsuan-Chen
authors.initials: HC
authors.lastname: Wu