Focusing of light by a nano-hole array
At Condensed Matter and Materials Physics Conference (CMMP 2007).
12 - 13 Apr 2007.
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Here for the first time we demonstrate experimentally and theoretically that the Talbot effect on a quasi-periodic array of nano-holes may be used to achieve sub-wavelength field localizations and well-isolated 'hot spots' of high electromagnetic energy concentration.Here we report on how a quasi-periodic array of holes creates sub-wavelength localizations of light without evanescent waves and how the fields created by such diffraction fall into the class of super-oscillating fields . This effect offers a new way to achieve sub-wavelength imaging in the far field.
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