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Non-Mechanical Multiplexed Beam-Steering Elements Based on Double-Sided Liquid Crystal Metasurfacesстатья
- Авторы: Gorkunov M.V., Geivandov A.R., Mamonova A.V., Simdyankin I.V., Kasyanova I.V., Ezhov A.A., Artemov V.V.
- Журнал: Photonics
- Том: 9
- Номер: 12
- Год издания: 2022
- Номер статьи: 986
- DOI: 10.3390/photonics9120986
- Аннотация: We propose, optimize, fabricate and test beam-steering elements based on double-sided liquid-crystal (LC) metasurfaces allowing for diffractive and spectral multiplexing, and thus covering three different beam deflection directions each. While straightforward parallel design requires one diffractive beam-steering element per a direction determined by Bragg’s law, double-sided LC-metasurfaces are remarkably flexible and allow optimization for three operation modes at different applied voltages: zero-voltage mode with dominant +1 order red light and +2 order blue light diffraction; intermediate mode at 1.4–1.6 V voltage with dominant +1 order blue light diffraction; and transparent mode at 5 V voltage. We comprehensively study three such elements with 6, 8 and 10 micrometer periods and verify their capability of deflecting blue and red light beams with 40–70% efficiencies in nine target directions with 10 ms characteristic switching times.
- Добавил в систему: Ежов Александр Анатольевич