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dc.contributor.authorKabiri, Ali
dc.contributor.authorGirgis, Emad
dc.contributor.authorCapasso, Federico
dc.date.accessioned2019-09-17T13:08:06Z
dc.date.issued2013
dc.identifier.citationKabiri, Ali, Emad Girgis, and Federico Capasso. 2013. “Buried Nanoantenna Arrays: Versatile Antireflection Coating.” Nano Letters 13 (12): 6040–47. https://doi.org/10.1021/nl403257a.
dc.identifier.issn1530-6984
dc.identifier.issn1530-6992
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:41371310*
dc.description.abstractReflection is usually a detrimental phenomenon in many applications such as flat-panel-displays, solar cells, photodetectors, infrared sensors, and lenses. Thus far, to control and suppress the reflection from a substrate, numerous techniques including dielectric interference coatings, surface texturing, adiabatic index matching, and scattering from plasmonic nanoparticles have been investigated. A new technique is demonstrated to manage and suppress reflection from lossless and lossy substrates. It provides a wider flexibility in design versus previous methods. Reflection from a surface can be suppressed over a narrowband, wideband, or multiband frequency range. The antireflection can be dependent or independent of the incident wave polarization. Moreover, antireflection at a very wide incidence angle can be attained. The reflection from a substrate is controlled by a buried nanoantenna array, a structure composed of (1) a subwavelength metallic array and (2) a dielectric cover layer referred to as a superstrate. The material properties and thickness of the superstrate and nanoantennas' geometry and periodicity control the phase and intensity of the wave circulating inside the superstrate cavity. A minimum reflectance of 0.02% is achieved in various experiments in the mid-infrared from a silicon substrate. The design can be integrated in straightforward way in optical devices. The proposed structure is a versatile AR coating to optically impedance matches any substrate to free space in selected any narrow and broadband spectral response across the entire visible and infrared spectrum.
dc.language.isoen_US
dc.publisherAmerican Chemical Society
dash.licenseMETA_ONLY
dc.titleBuried Nanoantenna Arrays: Versatile Antireflection Coating
dc.typeJournal Article
dc.description.versionVersion of Record
dc.relation.journalNano Letters
dash.depositing.authorCapasso, Federico::c84ca12d0f20adc982c7c314bebd7c9e::600
dc.date.available2019-09-17T13:08:06Z
dash.workflow.comments1Science Serial ID 67640
dc.identifier.doi10.1021/nl403257a
dash.source.volume13;12
dash.source.page6040-6047


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