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Propagation model for vector beams generated by metasurfaces. Public Deposited

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https://scholar.colorado.edu/concern/articles/41687j07c
Abstract
  • A propagation model of vector beams generated by metasurfaces based on vector diffraction theory is established theoretically and verified experimentally. Considering the Pancharatnam-Berry phase introduced by the metasurface, analytical forms of vector beams for arbitrary incident polarization and topological charge of metasurfaces are found in the Fresnel and Fraunhofer diffraction regions, respectively. The complex amplitude of the resultant vector beam can be described in terms of a confluent hypergeometric function, with an intensity profile that manifests concentric rings in the Fresnel region and a single ring in the Fraunhofer one. Fraunhofer diffraction provides a method to create vector beams with simultaneously high purity and modal power. Further experiments verify the theoretical results.
Creator
Date Issued
  • 2016-09-05
Academic Affiliation
Journal Title
Journal Issue/Number
  • 18
Journal Volume
  • 24
File Extent
  • 21177-21189
Publisher
Last Modified
  • 2019-12-06
Identifier
  • PubMed ID: 27607720
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DOI
ISSN
  • 1094-4087
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