Subwavelength gratings for creation and focusing of cylindrical vector beams

In this paper we derive the equations for the subwavelength grating vector of polarization element that creates the arbitrary order radially polarized beam. We show that the element can be implemented with different shape for different orientations of the input and output polarization. There are und...

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Published inJournal of physics. Conference series Vol. 1461; no. 1; pp. 12026 - 12029
Main Authors Degtyarev, S.A., Porfirev, A.P., Khonina, S.N.
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.03.2020
Subjects
Beams (radiation)
Physics
Polarization
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Summary:In this paper we derive the equations for the subwavelength grating vector of polarization element that creates the arbitrary order radially polarized beam. We show that the element can be implemented with different shape for different orientations of the input and output polarization. There are under consideration different essential cases of the first and the second order polarization. The second-order element can be sun- or mira- shape and axicon shape. Intermediate shapes are also possible.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1461/1/012026