Two-petal laser beam near a binary spiral axicon with topological charge 2

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dc.check.date2021-06-22
dc.check.infoAccess to this article is restricted until 24 months after publication by request of the publisher.en
dc.contributor.authorKotlyar, Victor V.
dc.contributor.authorStafeev, Sergey S.
dc.contributor.authorNalimov, Anton G.
dc.contributor.authorSchulz, Sebastian
dc.contributor.authorO'Faolain, Liam
dc.contributor.funderFederal Agency for Scientific Organizationsen
dc.contributor.funderРоссийский Фонд Фундаментальных Исследований (РФФИ)en
dc.contributor.funderRussian Science Foundationen
dc.contributor.funderEuropean Research Councilen
dc.date.accessioned2019-07-12T10:49:36Z
dc.date.available2019-07-12T10:49:36Z
dc.date.issued2019-06-22
dc.description.abstractWe were the first to notice that although in the immediate vicinity of a spiral axicon with m > 0 there is no light ring, there is an intensity pattern composed of several intensity petals, whose number is equal to the axicon topological charge, m. We experimentally demonstrate that a spiral axicon with the topological charge m = 2 and numerical aperture NA ≈ 0.6, operating at a 532-nm wavelength and fabricated by electron lithography, generates a two-petal (TP) laser beam rotating in the near-field (several micrometers away from the microaxicon surface). The rotation rate attained is higher than any that has been reported to date. It is worth noting that the higher the rotation rate of the TP-beam, the higher the axial resolution of an optical system that can be achieved without increasing its NA. Because a small on-axis shift of a point object leads to a large angle of rotation of its TP-image.en
dc.description.sponsorshipFederal Agency for Scientific Organizations (Agreement 007-ГЗ/Ч3363/26); Российский Фонд Фундаментальных Исследований (РФФИ) (Grant #18-29-20003); Russian Science Foundation (Grant #18-19-00595); European Research Council (Starting Grant 337508)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid105649en
dc.identifier.citationKotlyar, V. V., Stafeev, S. S., Nalimov, A. G., Schulz, S. and O'Faolain, L. (2019) ‘Two-petal laser beam near a binary spiral axicon with topological charge 2’, Optics and Laser Technology, 119, 105649 (8pp). doi: 10.1016/j.optlastec.2019.105649en
dc.identifier.doi10.1016/j.optlastec.2019.105649en
dc.identifier.eissn1879-2545
dc.identifier.endpage8en
dc.identifier.issn0030-3992
dc.identifier.journaltitleOptics and Laser Technologyen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/8150
dc.identifier.volume119en
dc.language.isoenen
dc.publisherElsevier Ltd.en
dc.rights© 2019, Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC BY-NC-ND 4.0 license.en
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectOptical vorticesen
dc.subjectBinary axiconen
dc.subjectLaser beam shapingen
dc.subjectRotation of laser beamen
dc.subjectFDTD-methoden
dc.subjectSNOMen
dc.titleTwo-petal laser beam near a binary spiral axicon with topological charge 2en
dc.typeArticle (peer-reviewed)en
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