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Plasmonic Metalens to Generate an Airy Beam
Airy beams represent an important type of non-diffracting beams—they are the only non-diffracting wave in one dimension, and thus they can be produced with a cylindrical geometry that modifies a wavefront in one dimension. In this paper, we show the design of a cylindrical plasmonic metalens consist...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10537606/ https://www.ncbi.nlm.nih.gov/pubmed/37764605 http://dx.doi.org/10.3390/nano13182576 |
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author | Sosa-Sánchez, Citlalli T. Téllez-Limón, Ricardo |
author_facet | Sosa-Sánchez, Citlalli T. Téllez-Limón, Ricardo |
author_sort | Sosa-Sánchez, Citlalli T. |
collection | PubMed |
description | Airy beams represent an important type of non-diffracting beams—they are the only non-diffracting wave in one dimension, and thus they can be produced with a cylindrical geometry that modifies a wavefront in one dimension. In this paper, we show the design of a cylindrical plasmonic metalens consisting of an array of nanoslits in a gold thin layer that modulates the phase of a Gaussian beam to generate an airy beam propagating in free space. Based on the numerical results, we show that it is possible to generate an airy beam by only matching the phase of wavefronts coming out from the array of gold nanoslits to the airy beam phase at plane [Formula: see text]. We numerically demonstrate that the airy beam exhibits bending over propagation and self-healing properties. The transmission efficiency is around 60%. The simplicity of the proposed structure open new perspectives in the design of flat metasurfaces for light-focusing applications. |
format | Online Article Text |
id | pubmed-10537606 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-105376062023-09-29 Plasmonic Metalens to Generate an Airy Beam Sosa-Sánchez, Citlalli T. Téllez-Limón, Ricardo Nanomaterials (Basel) Communication Airy beams represent an important type of non-diffracting beams—they are the only non-diffracting wave in one dimension, and thus they can be produced with a cylindrical geometry that modifies a wavefront in one dimension. In this paper, we show the design of a cylindrical plasmonic metalens consisting of an array of nanoslits in a gold thin layer that modulates the phase of a Gaussian beam to generate an airy beam propagating in free space. Based on the numerical results, we show that it is possible to generate an airy beam by only matching the phase of wavefronts coming out from the array of gold nanoslits to the airy beam phase at plane [Formula: see text]. We numerically demonstrate that the airy beam exhibits bending over propagation and self-healing properties. The transmission efficiency is around 60%. The simplicity of the proposed structure open new perspectives in the design of flat metasurfaces for light-focusing applications. MDPI 2023-09-17 /pmc/articles/PMC10537606/ /pubmed/37764605 http://dx.doi.org/10.3390/nano13182576 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Communication Sosa-Sánchez, Citlalli T. Téllez-Limón, Ricardo Plasmonic Metalens to Generate an Airy Beam |
title | Plasmonic Metalens to Generate an Airy Beam |
title_full | Plasmonic Metalens to Generate an Airy Beam |
title_fullStr | Plasmonic Metalens to Generate an Airy Beam |
title_full_unstemmed | Plasmonic Metalens to Generate an Airy Beam |
title_short | Plasmonic Metalens to Generate an Airy Beam |
title_sort | plasmonic metalens to generate an airy beam |
topic | Communication |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10537606/ https://www.ncbi.nlm.nih.gov/pubmed/37764605 http://dx.doi.org/10.3390/nano13182576 |
work_keys_str_mv | AT sosasanchezcitlallit plasmonicmetalenstogenerateanairybeam AT tellezlimonricardo plasmonicmetalenstogenerateanairybeam |