Dynamic control of hybrid grafted perfect vector vortex beams

Hammad Ahmed, Muhammad Afnan Ansari, Yan Li, Thomas Zentgraf, Muhammad Qasim Mehmood and Xianzhong Chen ()
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Hammad Ahmed: Heriot-Watt University
Muhammad Afnan Ansari: Heriot-Watt University
Yan Li: Heriot-Watt University
Thomas Zentgraf: Paderborn University
Muhammad Qasim Mehmood: Information Technology University (ITU) of the Punjab
Xianzhong Chen: Heriot-Watt University

Nature Communications, 2023, vol. 14, issue 1, 1-8

Abstract: Abstract Perfect vector vortex beams (PVVBs) have attracted considerable interest due to their peculiar optical features. PVVBs are typically generated through the superposition of perfect vortex beams, which suffer from the limited number of topological charges (TCs). Furthermore, dynamic control of PVVBs is desirable and has not been reported. We propose and experimentally demonstrate hybrid grafted perfect vector vortex beams (GPVVBs) and their dynamic control. Hybrid GPVVBs are generated through the superposition of grafted perfect vortex beams with a multifunctional metasurface. The generated hybrid GPVVBs possess spatially variant rates of polarization change due to the involvement of more TCs. Each hybrid GPVVB includes different GPVVBs in the same beam, adding more design flexibility. Moreover, these beams are dynamically controlled with a rotating half waveplate. The generated dynamic GPVVBs may find applications in the fields where dynamic control is in high demand, including optical encryption, dense data communication, and multiple particle manipulation.

Date: 2023
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DOI: 10.1038/s41467-023-39599-8

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