Light transmission through a high index dielectric-filled sub-wavelength hole in a metal film | Zendy

Juuso Olkkonen | Zendy; Kari Kataja | Zendy; Dennis G. Howe | Zendy

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Light transmission through a high index dielectric-filled sub-wavelength hole in a metal film

Author(s) -

Juuso Olkkonen,

Kari Kataja,

Dennis G. Howe

Publication year - 2005

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.13.006980

Subject(s) - optics , dielectric , materials science , wavelength , refractive index , fabry–pérot interferometer , transmission coefficient , extraordinary optical transmission , transmission (telecommunications) , resonance (particle physics) , optoelectronics , physics , surface plasmon , surface plasmon polariton , telecommunications , plasmon , atomic physics , computer science

We investigate transmission of a normally incident, linearly polarized plane wave through a circular sub-wavelength hole in a metal film filled by a high index dielectric medium. We demonstrate for the first time that the trans-mission efficiency of such holes exhibits a Fabry-Pérot like behaviour versus thickness of the metal film, similar to that exhibited by sub-wavelength slits in metal films illuminated by TM-polarized plane waves. We show that by reducing the imaginary part of the propagation constant of the hybrid HE11 mode and by fortifying the Fabry-Pérot resonance, the high index dielectric filling can greatly enhance light transmission through a circular sub-wavelength hole.

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