Enhanced transmission of slit arrays in an extremely thin metallic film
classification
⚛️ physics.optics
keywords
arraysenhancedslittransmissionveryapproximationcannotcavity
read the original abstract
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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