Regensburg 2025 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

O: Fachverband Oberflächenphysik

O 82: Plasmonics and Nanooptics: Fabrication, Characterization and Applications II

O 82.6: Vortrag

Donnerstag, 20. März 2025, 11:45–12:00, H8

Dynamic beam switching using individually adressable plasmonic gratings made from switchable metallic polymer in planar technology — •Jonas Herbig, Dominik Ludescher, Monika Ubl, Mario Hentschel, and Harald Giessen — 4th Physics Institute and Research Center SCoPE, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany

The ability to steer light in an optical system is vital for light detection and ranging (LiDAR) applications as required for autonomous driving and technology based on artificial intelligence (AI). One relevant drawback of conventional LiDAR platforms is their large size, making them unsuitable for integration into compact devices. Here, we demonstrate a compact and programmable electrode nanopattern utilizing the structuring of indium tin oxide (ITO) layer in conjunction with the conducting polymer poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). This structure demonstrates the individual addressability of multiple subgratings, enabling switching between different superlattice periods with CMOS-compatible voltages, resulting in multiple diffraction angles of up to 26° at a wavelength of 2150 nm. This work lays the foundation for adaptive optics as well as single addressable pixels necessary for advanced display systems and other active devices, such as spatial amplitude and phase modulators exceeding 1000 l/mm.

Keywords: Conducting Polymer PEDOT:PSS; Switchable Metasurfaces; Optoelectronic Devices; Plasmonic Grating; Planar Electrode Structure