Metasurfaces robustness analysis: Perfect nanostructures are not always the best! (Conference Presentation)

Hsiang-Chu Wang; Karim Achouri; Olivier J. F. Martin

doi:10.1117/12.2633428

3 October 2022 Metasurfaces robustness analysis: Perfect nanostructures are not always the best! (Conference Presentation)

Hsiang-Chu Wang, Karim Achouri, Olivier J. F. Martin

Author Affiliations +

Proceedings Volume PC12195, Metamaterials, Metadevices, and Metasystems 2022; PC1219509 (2022) https://doi.org/10.1117/12.2633428
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States

Abstract

We address the question whether technological mishaps (inaccurate meta-atoms dimensions, shapes or positions) do really influence the response of a metasurface? Using both simulations and experiments on purposely miss-fabricated samples, we analyze the robustness of phase gradient metasurfaces. Surprisingly, we observe that a "perfect" structure, without any defects, is not the one that exhibits the best performance in terms of efficiency and angular response. Actually, we demonstrate that specific, well-controlled, defects can significantly enhance the performance of such a metasurface and explain this behavior using the resonance and near-field properties of the corresponding nanostructures.

Conference Presentation

Citation Download Citation

Hsiang-Chu Wang, Karim Achouri, and Olivier J. F. Martin "Metasurfaces robustness analysis: Perfect nanostructures are not always the best! (Conference Presentation)", Proc. SPIE PC12195, Metamaterials, Metadevices, and Metasystems 2022, PC1219509 (3 October 2022); https://doi.org/10.1117/12.2633428

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