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Flat lensing by periodic loss-modulated materials
dc.contributor.author | Pradeep Kumar, Nikhil |
dc.contributor.author | Herrero Simon, Ramon |
dc.contributor.author | Botey Cumella, Muriel |
dc.contributor.author | Staliunas, Kestutis |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear |
dc.date.accessioned | 2014-05-02T10:48:52Z |
dc.date.available | 2014-05-02T10:48:52Z |
dc.date.created | 2013-09-23 |
dc.date.issued | 2013-09-23 |
dc.identifier.citation | Pradeep, N. [et al.]. Flat lensing by periodic loss-modulated materials. "Journal of the Optical Society of America B. Optical physics", 23 Setembre 2013, vol. 30, núm. 10, p. 2684-2688. |
dc.identifier.issn | 0740-3224 |
dc.identifier.uri | http://hdl.handle.net/2117/22800 |
dc.description | Missatge de l'editor: This paper was published in Journal of the Optical Society of America B and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/josab/abstract.cfm?uri=josab-30-10-2684. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. |
dc.description.abstract | We propose a flat lensing effect using a periodic loss-modulated material. In particular, we consider a two-dimensional square and rhombic arrangement of lossy cylinders embedded in a host media with the same refractive index. The effect is predicted by the dispersion curves obtained by a coupled mode expansion of Maxwell equations and by numerical beam propagation experiments. From both analytical and numerical studies, we show that, for a range of frequencies, light beams undergo negative diffraction on propagation through the loss-modulated medium, providing a window of high transmission. The phase shifts accumulated by negative diffraction within the structure are then compensated by normal diffraction, leading to substantial focalization beyond it. |
dc.format.extent | 5 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Ciències de la visió::Òptica física |
dc.subject.lcsh | Photonic crystals |
dc.subject.lcsh | Optical materials |
dc.subject.lcsh | Scattering (Physics) |
dc.subject.lcsh | Metamaterials |
dc.subject.other | Optical materials |
dc.subject.other | Diffraction theory |
dc.subject.other | Scattering |
dc.subject.other | Brillouin |
dc.subject.other | Metamaterials |
dc.subject.other | Photonic crystals |
dc.title | Flat lensing by periodic loss-modulated materials |
dc.type | Article |
dc.subject.lemac | Cristalls fotònics |
dc.subject.lemac | Materials òptics |
dc.subject.lemac | Dispersió (Física) |
dc.subject.lemac | Metamaterials |
dc.contributor.group | Universitat Politècnica de Catalunya. DONLL - Dinàmica no Lineal, Òptica no Lineal i Làsers |
dc.identifier.doi | 10.1364/JOSAB.30.002684 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://www.opticsinfobase.org/josab/abstract.cfm?uri=josab-30-10-2684 |
dc.rights.access | Open Access |
local.identifier.drac | 12795427 |
dc.description.version | Postprint (published version) |
local.citation.author | Pradeep, N.; Herrero, R.; Botey, M.; Staliunas, K. |
local.citation.publicationName | Journal of the Optical Society of America B. Optical physics |
local.citation.volume | 30 |
local.citation.number | 10 |
local.citation.startingPage | 2684 |
local.citation.endingPage | 2688 |
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