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dc.contributor.authorCheng, Yu Chieh
dc.contributor.authorZeng, H
dc.contributor.authorTrullàs Simó, Joaquim
dc.contributor.authorCojocaru, Crina
dc.contributor.authorMalinauskas, Mangirdas
dc.contributor.authorJukna, T
dc.contributor.authorWiersma, D.S.
dc.contributor.authorStaliunas, Kestutis
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear
dc.date.accessioned2015-02-18T07:43:19Z
dc.date.created2014-10-15
dc.date.issued2014-10-15
dc.identifier.citationCheng, Y. [et al.]. Beam focalization in reflection from flat dielectric subwavelength gratings. "Optics letters", 15 Octubre 2014, vol. 39, núm. 20, p. 6086-6089.
dc.identifier.issn0146-9592
dc.identifier.urihttp://hdl.handle.net/2117/26401
dc.description.abstractWe experimentally demonstrate the recently predicted effect of near-field focusing for light beams from flat dielectric subwavelength gratings (SWGs). This SWGs were designed for visible light 532 nm and fabricated by direct laser writing in a negative photoresist, with the refractive index n = 1.5 and the period d = 314 nm. The laterally invariant gratings can focus light beams without any optical axis to achieve the transversal invariance. We show that focal distances can be obtained up to 13 mu m at normal reflection for TE polarization.
dc.format.extent4 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshLasers
dc.subject.lcshPhotonic crystals
dc.subject.otherNegative refraction
dc.subject.otherPhotonic crystals
dc.subject.otherTransmission
dc.subject.otherLaser
dc.subject.otherLens
dc.titleBeam focalization in reflection from flat dielectric subwavelength gratings
dc.typeArticle
dc.subject.lemacCristalls
dc.subject.lemacLàsers
dc.contributor.groupUniversitat Politècnica de Catalunya. DONLL - Dinàmica no Lineal, Òptica no Lineal i Làsers
dc.contributor.groupUniversitat Politècnica de Catalunya. SIMCON - First-principles approaches to condensed matter physics: quantum effects and complexity
dc.identifier.doi10.1364/OL.39.006086
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac15342166
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
local.citation.authorCheng, Y.; Zeng, H.; Trullas, J.; Cojocaru, C.; Malinauskas, M.; Jukna, T.; Wiersma, D.; Staliunas, K.
local.citation.publicationNameOptics letters
local.citation.volume39
local.citation.number20
local.citation.startingPage6086
local.citation.endingPage6089


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