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dc.contributor.authorVillate-Guío, F.-
dc.contributor.authorLópez-Tejeira, F.-
dc.contributor.authorGarcía-Vidal, F. J.-
dc.contributor.authorMartín-Moreno, Luis-
dc.contributor.authorLeón-Pérez, F. de-
dc.identifierdoi: 10.1364/OE.20.025441-
dc.identifierissn: 1094-4087-
dc.identifier.citationOptics Express 20(23): 25441-25453 (2012)-
dc.description.abstractOne-dimensional light harvesting structures with a realistic geometry nano-patterned on an opaque metallic film are optimized to render high transmission efficiencies at optical and infrared frequencies. Simple design rules are developed for the particular case of a slit-groove array with a given number of grooves that are symmetrically distributed with respect to a central slit. These rules take advantage of the hybridization of Fabry-Perot modes in the slit and surface modes of the corrugated metal surface. Same design rules apply for optical and infrared frequencies. The parameter space of the groove array is also examined with a conjugate gradient optimization algorithm that used as a seed the geometries optimized following physical intuition. Both uniform and nonuniform groove arrays are considered. The largest transmission enhancement, with respect to a uniform array, is obtained for a chirped groove profile. Such relative enhancement is a function of the wavelength. It decreases from 39 % in the optical part of the spectrum to 15 % at the long wavelength infrared. © 2012 Optical Society of America.-
dc.description.sponsorshipThe authors gratefully acknowledge financial support by European Projects FP6 PLEAS project Ref. 034506 and EC FP7-ICT PLAISIR Project Ref. 247991, and the Spanish Ministry of Science and Innovation project MAT2011-28581-C02-02.-
dc.publisherOptical Society of America-
dc.titleOptimal light harvesting structures at optical and infrared frequencies-
dc.description.versionPeer Reviewed-
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