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Ultrabroadband gradient-pitch Bragg-Berry mirrors

hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorRAFAYELYAN, Mushegh
hal.structure.identifierCentre d'élaboration de matériaux et d'études structurales [CEMES]
dc.contributor.authorAGEZ, Gonzague
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorBRASSELET, Etienne
dc.date.created2017-09-11
dc.date.issued2017
dc.identifier.issn1050-2947
dc.description.abstractEnThe realization of a geometric phase optical device operating over a broad spectral range is usually confronted with intrinsic limitations depending on the physical process at play. Here we propose to use chiral nematic liquid-crystal slabs with helical ordering that varies in three dimensions, namely, gradient-pitch cholesterics endowed with in-plane space-variant angular positioning of the supramolecular helix. By doing so, we show that the recently introduced Bragg-Berry mirrors [M. Rafayelyan and E. Brasselet, Opt. Lett. 41, 3972 (2016).] can be endowed with an ultrabroadband spectral range. Experimental demonstration is made in the case of ultrabroadband optical vortex generation in the visible domain. These results offer a practical solution to the polychromatic management of the orbital angular momentum of light combining the circular Bragg reflection of chiral media with the Berry phase.
dc.description.sponsorshipTraitement hyperspectral du moment angulaire orbital de la lumière
dc.description.sponsorshipUniversité Fédérale de Toulouse
dc.language.isoen
dc.publisherAmerican Physical Society
dc.rights.urihttp://creativecommons.org/licenses/by-sa/
dc.title.enUltrabroadband gradient-pitch Bragg-Berry mirrors
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevA.96.043862
dc.subject.halPhysique [physics]/Physique [physics]/Optique [physics.optics]
bordeaux.journalPhysical Review A : Atomic, molecular, and optical physics [1990-2015]
bordeaux.page043862
bordeaux.volume96
bordeaux.issue4
bordeaux.peerReviewedoui
hal.identifierhal-01635088
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01635088v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physical%20Review%20A%20:%20Atomic,%20molecular,%20and%20optical%20physics%20%5B1990-2015%5D&rft.date=2017&rft.volume=96&rft.issue=4&rft.spage=043862&rft.epage=043862&rft.eissn=1050-2947&rft.issn=1050-2947&rft.au=RAFAYELYAN,%20Mushegh&AGEZ,%20Gonzague&BRASSELET,%20Etienne&rft.genre=article


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