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dc.contributor.authorStafeev, S.S.
dc.contributor.authorNalimov, A.G.
dc.contributor.authorKotlyar, M.V.
dc.contributor.authorO'Faolain, Liam
dc.contributor.authorKotlyar, V.V.
dc.contributor.editorSoifer, Victor
dc.contributor.editorKazanskiy, Nikolay
dc.contributor.editorKorotkova, Olga
dc.contributor.editorSazhin, Sergei
dc.identifier.citationStafeev , S S , Nalimov , A G , Kotlyar , M V , O'Faolain , L & Kotlyar , V V 2017 , Tight focusing of azimuthally polarized optical vortex produced by subwavelength grating . in V Soifer , N Kazanskiy , O Korotkova & S Sazhin (eds) , 3rd International Conference "Information Technology and Nanotechnology", ITNT-2017, 25-27 April 2017, Samara, Russia . Procedia Engineering , vol. 201 , Elsevier , pp. 83-89 , III International Conference and Youth School "Information Technologies and Nanotechnologies" (ITNT-2017) , Samara , Russian Federation , 25/04/17 .
dc.identifier.otherPURE: 251200932
dc.identifier.otherPURE UUID: 63c24e3c-0aca-4d6c-9614-5558d97169e7
dc.identifier.othercrossref: 10.1016/j.proeng.2017.09.668
dc.identifier.otherScopus: 85033444068
dc.identifier.otherWOS: 000426433500012
dc.description.abstractFocusing of an optical vortex with sectorial azimuthal polarization is numerically investigated. An effect of sector numbers on the results of focusing is estimated. It is shown that the focal spot produced by a beam with six sectors does not differ from the ideally azimuthally polarized optical vortex; a difference in the focal spot diameter does not exceed 0.001 of the wavelength. For a four-sectoral beam, the difference does not exceed 0.028 of the wavelength. We have investigated a four-Sector transmission Polarization Converter for a wavelength of 633 nm, that enables the conversion of a linearly polarized incident beam into a mixture of linearly and azimuthally polarized beams. It was experimentally shown that light propagated through the four-Sector transmission Polarization Converter and focused by Fresnel zone plate with a focal length of 532 nm produces focal spot with diameters 0.46 and 0.57 of wavelength.
dc.relation.ispartof3rd International Conference "Information Technology and Nanotechnology", ITNT-2017, 25-27 April 2017, Samara, Russiaen
dc.relation.ispartofseriesProcedia Engineeringen
dc.rightsCopyright 2017 The Authors. Published under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licenseen
dc.subjectTight focusingen
dc.subjectOptical vortexen
dc.subjectAzimuthally polarized lighten
dc.subjectFresnel zone plateen
dc.subjectSubwavelength gratingen
dc.subjectPolarization conversionen
dc.subjectQC Physicsen
dc.subjectTA Engineering (General). Civil engineering (General)en
dc.titleTight focusing of azimuthally polarized optical vortex produced by subwavelength gratingen
dc.typeConference itemen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Microphotonics and Photonic Crystals Groupen

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