Study of chromatic dispersion in multilayer metalens

J. Carlos Basilio-Ortiz; Ivan Moreno

doi:10.1117/12.2632410

3 October 2022 Study of chromatic dispersion in multilayer metalens

J. Carlos Basilio-Ortiz, Ivan Moreno

Proceedings Volume 12195, Metamaterials, Metadevices, and Metasystems 2022; 121950H (2022) https://doi.org/10.1117/12.2632410
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States

Abstract

In this work, we present a study by finite-difference time-domain FDTD simulations of metalenses with hyperbolic phase profile, formed by multilayer cylindrical scatters. The multilayers are constructed by alternating high refractive material (α-Si) and a low refractive (GaN). In this way, it is shown that these multilayer scatters improve some properties such as transmission and the reduction of the aspect ratio of the pillars to achieve the 2π phase control. And we studied the chromatic focal shift of various simulated metalenses with different numbers of layers.

Citation Download Citation

J. Carlos Basilio-Ortiz and Ivan Moreno "Study of chromatic dispersion in multilayer metalens", Proc. SPIE 12195, Metamaterials, Metadevices, and Metasystems 2022, 121950H (3 October 2022); https://doi.org/10.1117/12.2632410

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