dorsal/arxiv
View SchemaAnalytical model of the enhanced light transmission through subwavelength metal slits: Green's function formalism versus Rayleigh's expansion
| Authors | S. V. Kukhlevsky, M. Mechler, O. Samek, K. Janssens |
|---|---|
| Categories | |
| ArXiv ID | physics/0602184 |
| URL | https://arxiv.org/abs/physics/0602184 |
| DOI | 10.1007/s00340-006-2272-4 |
Abstract
We present an analytical model of the resonantly enhanced transmission of light through a subwavelength nm-size 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 Green's function formalism for the solution of Maxwell's equations. The resonance wavelengths are in agreement with 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.
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"abstract": "We present an analytical model of the resonantly enhanced transmission of\nlight through a subwavelength nm-size slit in a thick metal film. The simple\nformulae for the transmitted electromagnetic fields and the transmission\ncoefficient are derived by using the narrow-slit approximation and the Green\u0027s\nfunction formalism for the solution of Maxwell\u0027s equations. The resonance\nwavelengths are in agreement with the semi-analytical model [Y. Takakura, Phys.\nRev. Lett. 86, 5601 (2001)], which solves the wave equations by using the\nRayleigh field expansion. Our formulae, however, show great resonant\nenhancement of a transmitted wave, while the Rayleigh expansion model predicts\nattenuation. The difference is attributed to the near-field subwavelength\ndiffraction, which is not considered by the Rayleigh-like expansion models.",
"arxiv_id": "physics/0602184",
"authors": [
"S. V. Kukhlevsky",
"M. Mechler",
"O. Samek",
"K. Janssens"
],
"categories": [
"physics.optics"
],
"doi": "10.1007/s00340-006-2272-4",
"title": "Analytical model of the enhanced light transmission through subwavelength metal slits: Green\u0027s function formalism versus Rayleigh\u0027s expansion",
"url": "https://arxiv.org/abs/physics/0602184"
},
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