Focusing light with a single subwavelength aperture flanked by surface corrugations
Applied Physics Letters, ISSN: 0003-6951, Vol: 83, Issue: 22, Page: 4500-4502
2003
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Article Description
The focusing properties of single subwavelength apertures flanked by finite arrays of grooves that are equally spaced were analyzed. It was found that, associated with the resonant beaming effect previously reported, this type of structure also displays a lensing effect that appears at the same wavelength range. Universal curves for this resonant wavelength and for the geometrical parameters defining the focus were also given as functions of the number of grooves.
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