Fourier techniques for sidelobe reduction in dielectric metalenses

Tyler Brown; Ashkan Zandi; Sajjad Abdollahramezani; Spencer Fallek; Ali Adibi

doi:10.1117/12.2661600

17 March 2023 Fourier techniques for sidelobe reduction in dielectric metalenses

Tyler Brown, Ashkan Zandi, Sajjad Abdollahramezani, Spencer Fallek, Ali Adibi

Proceedings Volume PC12431, Photonic and Phononic Properties of Engineered Nanostructures XIII; PC124310J (2023) https://doi.org/10.1117/12.2661600
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

This talk is dedicated to the use of Fourier techniques for the purpose of designing dielectric metalenses with reduced sidelobes. Metalenses act as submicron scale spatially varying phase plates that apply a quadratic phase shift to a signal, thereby focusing the beam. Abnormalities arise due to the incredibly small scale of the lens; however, spatial filtering techniques, similar to techniques used in optical signal processing, can be applied to counteract these abnormalities. These techniques lead to new strategies in metalens design to remove unwanted effects, such as sidelobes, and a possibility of new functionality for metasurfaces in general.

Conference Presentation

Citation Download Citation

Tyler Brown, Ashkan Zandi, Sajjad Abdollahramezani, Spencer Fallek, and Ali Adibi "Fourier techniques for sidelobe reduction in dielectric metalenses", Proc. SPIE PC12431, Photonic and Phononic Properties of Engineered Nanostructures XIII, PC124310J (17 March 2023); https://doi.org/10.1117/12.2661600

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