Theory of Highly Directional Emission from a Single Subwavelength Aperture Surrounded by Surface Corrugations

Details Theory of Highly Directional Emission from a Single Subwavelength Aperture Surrounded by Surface Corrugations Theory of Highly Directional Emission from a Single Subwavelength Aperture Surrounded by Surface Corrugations

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003phrvl..90p7401m&link_type=abstract

Physical Review Letters, vol. 90, Issue 16, id. 167401

Physics

213

Metals And Metallic Alloys, Gratings, Polaritons, Collective Excitations

Scientific paper

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 et al., ScienceSCIEAS0036-8075 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.

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