A spatially shifted beam approach to subwavelength focusing

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dc.creatorMarkley, Loic
dc.creatorWong, Alex M. H.
dc.creatorWang, Yan
dc.creatorEleftheriades, George V.
dc.date2008-07-04
dc.date2008-09-25
dc.date.accessioned2026-07-07T10:04:49Z
dc.date.available2026-07-07T10:04:49Z
dc.descriptionAlthough negative-refractive-index metamaterials have successfully achieved subwavelength focusing, image resolution is limited by the presence of losses. In this Letter, a metal transmission screen with subwavelength spaced slots is proposed that focuses the near-field beyond the diffraction limit and furthermore, is easily scaled from microwave frequencies to the optical regime. An analytical model based on the superposition of shifted beam patterns is developed that agrees very well with full-wave simulations and is corroborated by experimental results at microwave frequencies.
dc.description5 pages, 7 figures. Content updated following reviewer comments to match final published paper
dc.identifierhttps://arxiv.org/abs/0807.0820
dc.identifierhttp://arxiv.org/abs/0807.0820
dc.identifierL. Markley, A. M. H. Wong, Y. Wang, G. V. Eleftheriades, "Spatially shifted beam approach to subwavelength focusing," Physical Review Letters, vol. 101, pp. 113901, Sept. 2008
dc.identifierdoi:10.1103/PhysRevLett.101.113901
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/169817
dc.subjectOptics
dc.titleA spatially shifted beam approach to subwavelength focusing
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