Detail publikace
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.
Český název
Analytical model of the enhanced light transmission through subwavelength metal slits: Greens function formalism versus Rayleighs expansion
Anglický název
Analytical model of the enhanced light transmission through subwavelength metal slits: Greens function formalism versus Rayleighs expansion
Typ
článek v časopise - ostatní, Jost
Jazyk
en
Originální abstrakt
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.
Český abstrakt
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.
Anglický abstrakt
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.
Klíčová slova anglicky
Analytical model of the light transmission, Greens function formalism, Rayleighs expansion
Rok RIV
2006
Vydáno
01.06.2006
ISSN
0946-2171
Časopis
APPLIED PHYSICS B-LASERS AND OPTICS
Ročník
84
Číslo
1
Počet stran
6
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",
month="June",
issn="0946-2171"
}