Theory of Highly Directional Emission from a Single Subwavelength Aperture Surrounded<? format?> by Surface Corrugations
Physical Review Letters, 2003•APS
We present a theoretical foundation for the beaming of light displayed by a single
subwavelength aperture in an appropriately corrugated metal film [HJ Lezec, Science 297,
820 (2002) SCIEAS 0036-8075]. 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.
subwavelength aperture in an appropriately corrugated metal film [HJ Lezec, Science 297,
820 (2002) SCIEAS 0036-8075]. 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.
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)SCIEAS0036-8075]. 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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