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Generation of scalar/vectorial vortex beams by using the plasmonic metasurfaces

Xiaodong Zhang, Depeng Kong, Yu Zhao, and Ningtao Ma

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Abstract

Scalar and vector vortex beams are characterized of a helical wavefront but different polarized states, which result in different applications. In this paper, we design and fabricate a plasmonic metasurface based on the geometric phase principle. The designed metasurfaces are capable of generating a scalar vortex beam with a topological charge of $\pm {2}$ and a vectorial vortex beam with a topological charge of $\pm {1}$ in the near-infrared band. The experimental results are in good agreement with the simulation results, and our work provides a new idea for the development of a multivortex beam converter.

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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