Dielectric metasurfaces for arbitrary engineering of multi-channel spin-orbit interactions

Gun-Yeal Lee; Jangwoon Sung; Byoungho Lee

doi:10.1117/12.2568381

20 August 2020 Dielectric metasurfaces for arbitrary engineering of multi-channel spin-orbit interactions

Gun-Yeal Lee, Jangwoon Sung, Byoungho Lee

Proceedings Volume 11498, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XIV; 114980N (2020) https://doi.org/10.1117/12.2568381
Event: SPIE Optical Engineering + Applications, 2020, Online Only

Conference Poster

Abstract

We experimentally demonstrate that dielectric metasurface can generate multi-channel vortex beams possessing different orbital angular momentums with arbitrarily engineered spin-orbit interactions. We propose a design principle of the proposed meta-atom that can modulate and switch spatial complex-amplitude information. Experimental results show that the proposed metasurface can generate multi-channel vortex beam arrays without interval noises, and it can make each vortex beam channel possess different spin-orbit conversion when the incident polarization is changed. These results provide a new opportunity to implement a novel vortex beam modulator, which can be applied for future development of quantum optics and optical communications.

Citation Download Citation

Gun-Yeal Lee, Jangwoon Sung, and Byoungho Lee "Dielectric metasurfaces for arbitrary engineering of multi-channel spin-orbit interactions", Proc. SPIE 11498, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XIV, 114980N (20 August 2020); https://doi.org/10.1117/12.2568381

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