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Antireflection coatings are necessary components in solar cells. It has recently been experimentally demonstrated that a periodic array of resonant subwavelength objects placed at an air-dielectric interface can significantly reduce reflection. We introduce the theoretical condition for complete reflection cancellation in this resonant antireflection scheme. First, the periodicity of the array needs...
Fano resonance, known from atomic physics, has been employed for a wide variety of nanophotonic structures, such as quantum dots, photonic crystals (PCs), plasmonics, and metamaterials, and so on. [1] With modal dispersion engineering, Fano filters and reflectors can all be realized in single layer dielectric PC structures [2–4]. Suh et al. and Liu et al. reported earlier the optical Q-factors and...
We demonstrate the existence of a bound optical mode supported by a slot in a thin metallic film deposited on a substrate, with slot dimensions much smaller than the wavelength.
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