Journal
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS
Volume 9, Issue 2, Pages 165-169Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1464-4258/9/2/008
Keywords
metallic gratings; extraordinary transmission
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Horizontal resonances of slit arrays are studied. They can lead to an enhanced transmission that cannot be explained using the single-mode approximation. A new type of cavity resonance is found when the slits are narrow for a wavelength very close to the period. It can be excited for very low thicknesses. Optimization shows these structures could constitute interesting monochromatic filters.
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