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Phys Rev Lett. 2002 Aug 5;89(6):063901. Epub 2002 Jul 22.

Resonant transmission of microwaves through a narrow metallic slit.

Author information

  • 1Thin Film Photonics, School of Physics, University of Exeter, United Kingdom.

Abstract

Strong resonant transmission of microwave radiation through a very narrow (much less than the radiation wavelength) metallic slit is recorded. The results show that a set of resonant self-coupled surface plasmons are excited within the small gap, giving a Fabry-PĂ©rot-like behavior in accord with analytical results published earlier [Y. Takakura, Phys. Rev. Lett. 86, 5601 (2001)]. The metallic slit, formed by two thick metal plates spaced apart by tens of microns, is inserted in a wavelength-sized aperture. On resonance the transmissivity through the metal slit is more than 2 orders of magnitude greater than the radiation impinging on the slit area.

PMID:
12190581
[PubMed]
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