Sub-wavelength annular-slit-assisted superoscillatory lens for longitudinally-polarized super-resolution focusing

A binary metallic superoscillatory lens assisted with annular subwavelength slits is proposed, which generates a longitudinally-polarized super-resolution focal point. The annular slits are designed to selectively transmit radially-polarized light. Simulations using the finite element method show a...

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Detalles Bibliográficos
Autores principales: Kim, Hyuntai, Rogers, Edward T. F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6987132/
https://www.ncbi.nlm.nih.gov/pubmed/31992730
http://dx.doi.org/10.1038/s41598-019-56810-3
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author Kim, Hyuntai
Rogers, Edward T. F.
author_facet Kim, Hyuntai
Rogers, Edward T. F.
author_sort Kim, Hyuntai
collection PubMed
description A binary metallic superoscillatory lens assisted with annular subwavelength slits is proposed, which generates a longitudinally-polarized super-resolution focal point. The annular slits are designed to selectively transmit radially-polarized light. Simulations using the finite element method show a 0.24 λ focal spot with 21.8 dB of polarization purity and only 0.342 dB reduction in efficiency compared to a standard superoscillatory lens.
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spelling pubmed-69871322020-01-31 Sub-wavelength annular-slit-assisted superoscillatory lens for longitudinally-polarized super-resolution focusing Kim, Hyuntai Rogers, Edward T. F. Sci Rep Article A binary metallic superoscillatory lens assisted with annular subwavelength slits is proposed, which generates a longitudinally-polarized super-resolution focal point. The annular slits are designed to selectively transmit radially-polarized light. Simulations using the finite element method show a 0.24 λ focal spot with 21.8 dB of polarization purity and only 0.342 dB reduction in efficiency compared to a standard superoscillatory lens. Nature Publishing Group UK 2020-01-28 /pmc/articles/PMC6987132/ /pubmed/31992730 http://dx.doi.org/10.1038/s41598-019-56810-3 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Kim, Hyuntai
Rogers, Edward T. F.
Sub-wavelength annular-slit-assisted superoscillatory lens for longitudinally-polarized super-resolution focusing
title Sub-wavelength annular-slit-assisted superoscillatory lens for longitudinally-polarized super-resolution focusing
title_full Sub-wavelength annular-slit-assisted superoscillatory lens for longitudinally-polarized super-resolution focusing
title_fullStr Sub-wavelength annular-slit-assisted superoscillatory lens for longitudinally-polarized super-resolution focusing
title_full_unstemmed Sub-wavelength annular-slit-assisted superoscillatory lens for longitudinally-polarized super-resolution focusing
title_short Sub-wavelength annular-slit-assisted superoscillatory lens for longitudinally-polarized super-resolution focusing
title_sort sub-wavelength annular-slit-assisted superoscillatory lens for longitudinally-polarized super-resolution focusing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6987132/
https://www.ncbi.nlm.nih.gov/pubmed/31992730
http://dx.doi.org/10.1038/s41598-019-56810-3
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