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dc.contributor.author유용상-
dc.contributor.authorSeong-Won Moon-
dc.contributor.authorHee-Dong Jeong-
dc.contributor.authorSiwoo Lee-
dc.contributor.authorByoungho Lee-
dc.contributor.authorSeung-Yeol Lee-
dc.date.accessioned2021-06-09T04:23:00Z-
dc.date.available2021-06-09T04:23:00Z-
dc.date.issued2019-07-
dc.identifier.citationVOL 27, NO 14-19129-
dc.identifier.issn1094-4087-
dc.identifier.other53503-
dc.identifier.urihttp://pubs.kist.re.kr/handle/201004/70096-
dc.description.abstractA metasurface is a planar optical device that controls the phase, amplitude, and polarization of light through subwavelength-scale unit elements, called meta-atom. The tunability of plasmonic vortex lens (PVL) which generates surface plasmon polaritons (SPPs) carrying orbital angular momentum can be improved by using meta-atom. However, conventional PVLs exhibit nonuniform field profiles according to the incident polarization states owing to the spin-orbital interaction (SOI) effect observed during SPP excitation. This paper describes a method of compensating for SOI of PVL by using the geometric phase of distributed nanoslits in a gold film. By designing the orientation angles of slit pairs, the antiphase of the SOI effect can be generated for compensatory effect. In addition, polarizationindependent PVLs are designed by applying a detour phase based on the position of the slit pairs. PVLs for center-, off-center-, and multiple-focus cases are demonstrated and measured via a near-field scanning microscope.-
dc.publisherOptics express-
dc.subjectspin-orbit-
dc.subjectmetasurface-
dc.titleCompensation of spin-orbit interaction using the geometric phase of distributed nanoslits for polarization-independent plasmonic vortex generation-
dc.typeArticle-
dc.relation.page1911919129-
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