Metasurfaces for Light Detection and Ranging

Metasurfaces are versatile optical components that can distribute optical power in desired regions of space, thus holding great potential for on-chip integration of miniaturized optoelectronic and imaging systems[1]. Using metasurfaces, we reported advanced LiDAR technology that leverages from ultrafast low FoV deflectors cascaded with large area metasurfaces to achieve large FoV (150°) and high framerate (kHz)[2].<br/>Additionally, achieving wide-angle 3D imaging is becoming essential nowadays for autonomous robotic systems, yet most of the available solutions fail to simultaneously measure back-scattered from multiple directions. Inspired by arthropods eyes, we conceive a metasurface can overcome the limitation of curved optics, achieving panoramic vision. On-chip vertical integration of directional metalenses on the top of a planar array of detectors enables a powerful insect-inspired LiDAR vision that is capable of 3D imaging over a wide field of view[3].<br/>The use of our disruptive LiDAR technology with advanced learning algorithms offers perspectives to improve perception and decision-making process of ADAS and robotic systems.<br/>[1] "Crossing of the branch cut: the topological origin of a universal -phase retardation in non-Hermitian metasurfaces", R Colom, E Mikheeva, K Achouri, J Zuniga-Perez, N Bonod, O JF Martin, S Burger, and P Genevet, Laser & Photonics Reviews 2023, 2200976<br/>[2] "Metasurface-enhanced Light Detection and Ranging Technology" RJ Martins, E Marinov, M. Aziz Ben Youssef, C Kyrou, M Joubert, C Colmagro, V Gâté, C Turbil, PM Coulon, D Turover, S Khadir, M Giudici, C Klitis, M Sorel and P Genevet, Nature Communications 13, 5724 (2022)<br/>[3] “Bio-inspired flat optics for directional 3D Light Detection And Ranging”, C Majorel, A Loucif, E Marinov, RJ Martins, A Patoux, PM Coulon, V Brandli, E Charbon, C Bruschini, and P Genevet, (submitted 2023)