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O: Fachverband Oberflächenphysik

O 49: Plasmonics and Nanooptics I: Fabrication and Application

O 49.1: Talk

Wednesday, March 29, 2023, 10:30–10:45, WIL A317

Towards dynamic holograms with electrically switchable polymer metasurfaces: materials apsects — •Dominik Ludescher, Julian Karst, Mario Hentschel, and Harald Giessen — 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Germany

Holography is considered as an innovative technology that is predicted to have a significant impact on numerous fields of application such as virtual, mixed, augmented reality, medical technology, and future displays. Overlaying digital information with the real world is the general concept of augmented reality. Yet, for concepts such as 3D holographic video conferencing or surgery planning, high-resolution and high-performance dynamic holograms are inevitable. To achieve this goal, nanophotonic plasmonic approaches are considered as a very promising platform. Here, we introduce active plasmonic metasurfaces for dynamic holography based on electrically switchable metallic polymer nanoantennas. The used polymer material incorporates a metal-to-insulator phase transition in the infrared spectral range which is driven by CMOS compatible voltages of only +/-1 V. In combination with possible pixel sizes below 1 micron, this makes the polymer metasurface ideally suited for holographic display applications. Additionally, using variable angle spectroscopic ellipsometry, we investigate the optical properties of such metallic polymers. In particular, we analyze their complex dielectric function and the associated zero epsilon region around the plasma wavelength. This will lay the foundation to shift the plasmonic metasurface operation to the visible spectral range.