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hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorKRAVETS, Nina
dc.contributor.authorMUR, Urban
dc.contributor.authorRAVNIK, Miha
dc.contributor.authorŽUMER, Slobodan
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorBRASSELET, Etienne
dc.date.accessioned2023-05-25T02:51:37Z
dc.date.available2023-05-25T02:51:37Z
dc.date.issued2022-12-14
dc.identifier.issn0003-6951
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/182334
dc.description.abstractEnGeometric phase optical elements made of space-variant anisotropic media customarily find their optimal operating conditions when a halfwave retardance condition is fulfilled, which allows imparting polarization-dependent changes to an incident wavefront. In practice, intrinsic limitations of a man-made manufacturing process or a finite spectrum of a light source lead to a deviation from the ideal behavior. This implies an implementation of strategies to compensate for the associated efficiency losses. Here, we report on how the intrinsic tunable features of self-engineered liquid crystal topological defects can be used to enhance rejection capabilities of spectrally tunable vector vortex coronagraphs. We also discuss the extent of which current models enable to design efficient devices. The simplicity and decent performance of our approach offer the possibility to an amateur astronomy community to consider the use of vortex coronography.
dc.language.isoen
dc.publisherAmerican Institute of Physics
dc.title.enActive rejection-enhancement of spectrally tunable liquid crystal geometric phase vortex coronagraphs
dc.typeArticle de revue
dc.identifier.doi10.1063/5.0130078
dc.subject.halPhysique [physics]
bordeaux.journalApplied Physics Letters
bordeaux.page241104
bordeaux.volume121
bordeaux.hal.laboratoriesLaboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798*
bordeaux.issue24
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-04104056
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04104056v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Applied%20Physics%20Letters&rft.date=2022-12-14&rft.volume=121&rft.issue=24&rft.spage=241104&rft.epage=241104&rft.eissn=0003-6951&rft.issn=0003-6951&rft.au=KRAVETS,%20Nina&MUR,%20Urban&RAVNIK,%20Miha&%C5%BDUMER,%20Slobodan&BRASSELET,%20Etienne&rft.genre=article


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