Regensburg 2019 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
O: Fachverband Oberflächenphysik
O 21: Poster Monday: Plasmonics and Nanooptics
O 21.7: Poster
Montag, 1. April 2019, 17:45–20:00, Poster F
Multichannel holographic display and encryption using all-dielectric metasurfaces — •Basudeb Sain1, Lingling Huang2, and Thomas Zentgraf1 — 1Department of Physics, University of Paderborn, Warburger Straße 100, 33098 Paderborn, Germany — 2Laser Micro/Nano-Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Metasurface hologram has emerged as a promising candidate for applications in optical displays, storage and security by exhibiting unprecedented spatial resolution, enormous information capacity and large field of view compared to traditional methods. In order to explore the full capability of the information storage/display and enhance the encryption security of metasurface holograms, smart multiplexing techniques are highly demanded. Here, we integrate multiple polarization manipulation channels for various spatial phase profiles into a single birefringent vectorial hologram by completely avoiding unwanted cross talk. Multiple independent target phase profiles with quantified phase relations, processing significantly different information in different polarization states are realized within a single all-dielectric metasurface. We demonstrate high fidelity, large efficiency, broadband operation, and a total of twelve polarization channels with our metasurface holograms. Such multichannel polarization multiplexing can be used for dynamic vectorial holographic display and provide triple protection to the optical security. The concept is highly promising for applications of arbitrary spin to angular momentum conversion and various phase modulation/beam shaping elements.