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Phys Rev Lett. 2003 Apr 25;90(16):167401. Epub 2003 Apr 23.

Theory of highly directional emission from a single subwavelength aperture surrounded by surface corrugations.

Author information

  • 1Departamento de Física de la Materia Condensada, ICMA-CSIC, Universidad de Zaragoza, E-50009 Zaragoza, Spain.

Abstract

We present a theoretical foundation for the beaming of light displayed by a single subwavelength aperture in an appropriately corrugated metal film [H. J. Lezec, Science 297, 820 (2002)]]. Good agreement is found between calculations and experimental data. We show that beaming is due to the formation of electromagnetic surface resonances and that the beam direction, width, and wavelength at which it occurs can be selected by tuning geometrical parameters of the structure.

PMID:
12732005
DOI:
10.1103/PhysRevLett.90.167401
[PubMed]
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