Multilayer dielectric reflective metalens without metallic mirror

J. Carlos Basilio-Ortiz; Ivan Moreno

doi:10.1117/12.2677708

4 October 2023 Multilayer dielectric reflective metalens without metallic mirror

J. Carlos Basilio-Ortiz, Ivan Moreno

Proceedings Volume 12646, Metamaterials, Metadevices, and Metasystems 2023; 126460E (2023) https://doi.org/10.1117/12.2677708
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

While transmission-mode metalenses have been extensively studied, reflection-mode metalenses remains almost unexplored, presenting advantages in terms of improved efficiency and reduced complexity. In this work we investigate a multilayer dielectric metalens operating in reflection mode without a metallic layer. Simulations and analysis demonstrate the performance of the metalens, with an 84% reflectivity the metalens proves its efficacy in reflection mode. At a numerical aperture of 0.15, the metalens achieves 33% focusing efficiency, facilitating efficient light manipulation and subwavelength resolution. Additionally, the metalens exhibits a well-defined focal spot with a full width at half maximum of 2.03 μm, approaching the diffraction limit.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

J. Carlos Basilio-Ortiz and Ivan Moreno "Multilayer dielectric reflective metalens without metallic mirror", Proc. SPIE 12646, Metamaterials, Metadevices, and Metasystems 2023, 126460E (4 October 2023); https://doi.org/10.1117/12.2677708

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