Electrically tunable MEMS optical metasurfaces

Yadong Deng; Chao Meng; Paul C. V. Thrane; Sören im Sande; Sergey I. Bozhevolnyi; Fei Ding

doi:10.1117/12.3017218

6 June 2024 Electrically tunable MEMS optical metasurfaces

Yadong Deng, Chao Meng, Paul C. V. Thrane, Sören im Sande, Sergey I. Bozhevolnyi, Fei Ding

Proceedings Volume PC12990, Metamaterials XIV; PC129901Q (2024) https://doi.org/10.1117/12.3017218
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Conference Poster

Abstract

Advancing an Optical Metasurface (OMS) platform with dynamic adjustability and rapid response times strongly aligns with the current trends in photonics. Firstly, we demonstrate an electrically driven MEMS-OMS-based dynamic linear polarizer (DLP), benefiting from a tunable hybrid plasmonic Fabry-Pérot (FP) cavity formed by an anisotropic plasmonic OMS and thin-film piezoelectric MEMS mirror and featuring a continuous and tunable, in a fast and reversible fashion, Extinction Ratio (ER) between two linearly polarized incident beams. DLP-based dynamic grayscale imaging and Vector Vortex Beam (VVB) generation have also been realized. Secondly, we embark on an in-depth exploration of optical Exceptional Points (EPs) within a fully electrically tunable non-Hermitian metasurface platform that leverages the synergistic interplay between chiral gold meta-atoms with a piezoelectric MEMS mirror, thereby allowing for fine-detuning the system to construct a voltage-controlled spectral space. We demonstrate a voltage-controlled topological phase transition, transforming a chiral EP to a Diabolic Point (DP) characterized by degenerate eigenvalues and orthogonal eigenstates.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yadong Deng, Chao Meng, Paul C. V. Thrane, Sören im Sande, Sergey I. Bozhevolnyi, and Fei Ding "Electrically tunable MEMS optical metasurfaces", Proc. SPIE PC12990, Metamaterials XIV, PC129901Q (6 June 2024); https://doi.org/10.1117/12.3017218

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