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Journal Articles Nature Communications Year : 2019

Metasurface orbital angular momentum holography


Allowing subwavelength-scale-digitization of optical wavefronts to achieve complete control of light at interfaces, metasurfaces are particularly suited for the realization of planar phaseholograms that promise new applications in high-capacity information technologies. Similarly, the use of orbital angular momentum of light as a new degree of freedom for information processing can further improve the bandwidth of optical communications. However, due to the lack of orbital angular momentum selectivity in the design of conventional holograms, their utilization as an information carrier for holography has never been implemented. Here we demonstrate metasurface orbital angular momentum holography by utilizing strong orbital angular momentum selectivity offered by meta-holograms consisting of GaN nanopillars with discrete spatial frequency distributions. The reported orbital angular momentummultiplexing allows lensless reconstruction of a range of distinctive orbital angular momentum-dependent holographic images. The results pave the way to the realization of ultrahigh-capacity holographic devices harnessing the previously inaccessible orbital angular momentum multiplexing.
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hal-02304950 , version 1 (26-11-2020)



Haoran Ren, Gauthier Briere, Xinyuan Fang, Peinan Ni, Rajath Sawant, et al.. Metasurface orbital angular momentum holography. Nature Communications, 2019, 10, ⟨10.1038/s41467-019-11030-1⟩. ⟨hal-02304950⟩
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