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Quasi-Continuous Metasurface Beam Splitters Enabled by Vector Iterative Fourier Transform Algorithm

Quasi-continuous metasurfaces are widely used in various optical systems and their subwavelength structures invalidate traditional design methods based on scalar diffraction theory. Here, a novel vector iterative Fourier transform algorithm (IFTA) is proposed to realize the fast design of quasi-cont...

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Autores principales: Li, Jinzhe, Zhang, Fei, Pu, Mingbo, Guo, Yinghui, Li, Xiong, Ma, Xiaoliang, Wang, Changtao, Luo, Xiangang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7926747/
https://www.ncbi.nlm.nih.gov/pubmed/33670048
http://dx.doi.org/10.3390/ma14041022
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author Li, Jinzhe
Zhang, Fei
Pu, Mingbo
Guo, Yinghui
Li, Xiong
Ma, Xiaoliang
Wang, Changtao
Luo, Xiangang
author_facet Li, Jinzhe
Zhang, Fei
Pu, Mingbo
Guo, Yinghui
Li, Xiong
Ma, Xiaoliang
Wang, Changtao
Luo, Xiangang
author_sort Li, Jinzhe
collection PubMed
description Quasi-continuous metasurfaces are widely used in various optical systems and their subwavelength structures invalidate traditional design methods based on scalar diffraction theory. Here, a novel vector iterative Fourier transform algorithm (IFTA) is proposed to realize the fast design of quasi-continuous metasurface beam splitters with subwavelength structures. Compared with traditional optimization algorithms that either require extensive numerical simulations or lack accuracy, this method has the advantages of accuracy and low computational cost. As proof-of-concept demonstrations, several beam splitters with custom-tailored diffraction patterns and a 7 × 7 beam splitter are numerically demonstrated, among which the maximal diffraction angle reaches 70° and the best uniformity error reaches 0.0195, showing good consistency with the target energy distribution and these results suggest that the proposed vector IFTA may find wide applications in three-dimensional imaging, lidar techniques, machine vision, and so forth.
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spelling pubmed-79267472021-03-04 Quasi-Continuous Metasurface Beam Splitters Enabled by Vector Iterative Fourier Transform Algorithm Li, Jinzhe Zhang, Fei Pu, Mingbo Guo, Yinghui Li, Xiong Ma, Xiaoliang Wang, Changtao Luo, Xiangang Materials (Basel) Article Quasi-continuous metasurfaces are widely used in various optical systems and their subwavelength structures invalidate traditional design methods based on scalar diffraction theory. Here, a novel vector iterative Fourier transform algorithm (IFTA) is proposed to realize the fast design of quasi-continuous metasurface beam splitters with subwavelength structures. Compared with traditional optimization algorithms that either require extensive numerical simulations or lack accuracy, this method has the advantages of accuracy and low computational cost. As proof-of-concept demonstrations, several beam splitters with custom-tailored diffraction patterns and a 7 × 7 beam splitter are numerically demonstrated, among which the maximal diffraction angle reaches 70° and the best uniformity error reaches 0.0195, showing good consistency with the target energy distribution and these results suggest that the proposed vector IFTA may find wide applications in three-dimensional imaging, lidar techniques, machine vision, and so forth. MDPI 2021-02-21 /pmc/articles/PMC7926747/ /pubmed/33670048 http://dx.doi.org/10.3390/ma14041022 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Li, Jinzhe
Zhang, Fei
Pu, Mingbo
Guo, Yinghui
Li, Xiong
Ma, Xiaoliang
Wang, Changtao
Luo, Xiangang
Quasi-Continuous Metasurface Beam Splitters Enabled by Vector Iterative Fourier Transform Algorithm
title Quasi-Continuous Metasurface Beam Splitters Enabled by Vector Iterative Fourier Transform Algorithm
title_full Quasi-Continuous Metasurface Beam Splitters Enabled by Vector Iterative Fourier Transform Algorithm
title_fullStr Quasi-Continuous Metasurface Beam Splitters Enabled by Vector Iterative Fourier Transform Algorithm
title_full_unstemmed Quasi-Continuous Metasurface Beam Splitters Enabled by Vector Iterative Fourier Transform Algorithm
title_short Quasi-Continuous Metasurface Beam Splitters Enabled by Vector Iterative Fourier Transform Algorithm
title_sort quasi-continuous metasurface beam splitters enabled by vector iterative fourier transform algorithm
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7926747/
https://www.ncbi.nlm.nih.gov/pubmed/33670048
http://dx.doi.org/10.3390/ma14041022
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