Publication detail

Analytical model of the enhanced light transmission through subwavelength metal slits: Greens function formalism versus Rayleighs expansion

KUKHLEVSKY, S.V., MECHLER, M., SAMEK, O., JANSSENS, K.

Original Title

Type

journal article - other

Language

English

Original Abstract

We present an analytical model of the resonantly enhanced transmission of light through a subwavelength nmsize slit in a thick metal film. The simple formulae for the transmitted electromagnetic fields and the transmission coefficient are derived by using the narrow-slit approximation and the Greens function formalism for the solution of Maxwells equations. The resonance wavelengths are in agreementwith the semi-analytical model [Y. Takakura, Phys. Rev. Lett. 86, 5601 (2001)], which solves the wave equations by using the Rayleigh field expansion. Our formulae, however, show great resonant enhancement of a transmitted wave, while the Rayleigh expansion model predicts attenuation. The difference is attributed to the near-field subwavelength diffraction, which is not considered by the Rayleigh-like expansion models.

Keywords

Analytical model of the light transmission, Greens function formalism, Rayleighs expansion

Authors

KUKHLEVSKY, S.V., MECHLER, M., SAMEK, O., JANSSENS, K.

RIV year

2006

Released

1. 6. 2006

ISBN

0946-2171

Periodical

APPLIED PHYSICS B-LASERS AND OPTICS

Year of study

Number

State

United States of America

Pages from

Pages to

Pages count

BibTex

@article{BUT43545,
  author="Ota {Samek}",
  title="Analytical model of the enhanced light transmission through subwavelength metal slits: Greens function formalism versus Rayleighs expansion",
  journal="APPLIED PHYSICS B-LASERS AND OPTICS",
  year="2006",
  volume="84",
  number="1",
  pages="6",
  issn="0946-2171"
}