Optimal design of beam-deflectors using extended unit-cell metagratings

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dc.contributor.author Donda, Krupali D.
dc.contributor.author Hegde, Ravi S.
dc.date.accessioned 2019-01-16T07:49:19Z
dc.date.available 2019-01-16T07:49:19Z
dc.date.issued 2019
dc.identifier.citation Donda, Krupali D. and Hegde, Ravi S., "Optimal design of beam-deflectors using extended unit-cell metagratings", Progress In Electromagnetics Research, vol. 77, pp. 83-92, 2019. en_US
dc.identifier.issn 1070-4698
dc.identifier.issn 1559-8985
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/4211
dc.description.abstract Recent reports on metasurfaces have focused on beam-deflector, a canonical optical element that can be used to compose other functionalities. Most reported designs, however, are limited to small deflection angles; large-angle (?50 degrees deflection) transmission-mode beam steering designs show poor efficiency. Furthermore, rapid efficiency degradation is also observed for small deviations in the angle of incidence. This paper presents a numerical study of beam-deflectors based on extended unitcell metagratings (unit-cells containing multiple differently sized nanoantenna members). In comparison to previous reports, the designs achieve significant efficiency improvements, wider acceptance angles and better polarization filtering. The versatility of the design technique is demonstrated by designing polarizing beam deflectors polarization insensitive beam deflectors and prismatic beam deflectors.
dc.description.statementofresponsibility by Krupali D. Donda and Ravi S. Hegde
dc.format.extent vol. 77, pp. 83-92
dc.language.iso en en_US
dc.publisher Electromagnetics Academy en_US
dc.subject Optimal design en_US
dc.subject Beam-deflectors en_US
dc.subject Extended unit-cell metagratings en_US
dc.title Optimal design of beam-deflectors using extended unit-cell metagratings en_US
dc.type Article en_US
dc.relation.journal Progress In Electromagnetics Research

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