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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F06%3APU63065" target="_blank" >RIV/00216305:26210/06:PU63065 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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

Czech description

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.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BH - Optics, masers and lasers

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2006

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Applied Physics B - Lasers and Optics

ISSN

0946-2171

e-ISSN

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Volume of the periodical

84

Issue of the periodical within the volume

1

Country of publishing house

DE - GERMANY

Number of pages

6

Pages from-to

19-24

UT code for WoS article

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EID of the result in the Scopus database

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