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Optical Metasurfaces: Physics, Applications, and System Integration

Patrice Genevet, Professor of Physics, Colorado School of Mines

Presented in-person in Goergen 101 and on Zoom

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Abstract

In this seminar, I will present the design methodology of Metasurfaces, including our new results on the physics of resonant (non-Hermitian) metasurfaces [1]. We will introduce the concept of scattering complex singularities and discuss leveraging their position in the complex frequency plane for wavefront shaping.

We will then introduce new meta-systems, namely a chip-scale directional laser emission for arbitrary wavefront engineering and spin-controlled laser emission [2], and a kHz frame rate Metasurface-LiDAR for 3D imaging [3]. New imaging capabilities provided by 3D LiDAR metasystem can be attained using Metasurfaces, including high frame rate beam switching and imaging, high field of view, and the simultaneous acquisition of multiple fields of view, in particular 3D insect-inspired directional imaging[4]. We will conclude the presentation by discussing how to achieve reconfigurable liquid-crystal metasurfaces and how these new functionalities could potentially push the frontiers of optoelectronic systems beyond conventional devices, in particular for reprogrammable optical computing[5].

[1] Science, 373, 1133-1137 (2021); Laser & Photonics Reviews 2200976 (2023); Optica 10(10) 1287-1294 (2023), Nature commun 15 (1), 232 (2024); Nature commun 16 (1), 2656 (2025); Nature commun 16 (1), 5953 (2025);
[2] Nat. Nanotechnol. 15, 125–130 (2020); Nat Commun 13, 7795 (2022).
[3] Nat Commun 13, 5724 (2022); Advanced Photonics, 5, 046005 (2023).
[4] npj Nanophotonics 1 (1), 18 (2024)
[5] Nature Reviews Physics, 1-17 (2025)

Biography

Patrice Genevet is a Professor of Physics at the Colorado School of Mines. He received his PhD degree at the université Côte d'Azur, France. He did five years as a research fellow (2009-2014) in the Capasso group (SEAS, Harvard University) in collaboration with Prof. M.O. Scully (Texas A&M University) where he developed the concept of optical Metasurfaces. In 2014, he became senior research scientist at ASTAR, Singapore. In 2015, He joined CNRS as ‘Chargé de Recherche’. He receives several awards, including the ERC Starting Grant 2015, the 2017 Aimé Cotton Price from the French Physical Society, the 2019 ERC Proof of Concept, and the 2021 Fabry-De Gramont Price from the French Optical Society. Since 2018, he has been named annually among the Top 1% Highly Cited Researchers by Clarivate. P. Genevet research activities concern the development of optical metamaterials, passive and active metasurfaces, and their applications and integration in optoelectronic devices. He owns 8 patents, more than 130 publications, H factor of 60 and more than 31700 citations(Google Scholar).