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Optical edge detection based on high-efficiency dielectric metasurface

Optical edge detection is a useful method for characterizing boundaries, which is also in the forefront of image processing for object detection. As the field of metamaterials and metasurface is growing fast in an effort to miniaturize optical devices at unprecedented scales, experimental realizatio...

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Autores principales: Zhou, Junxiao, Qian, Haoliang, Chen, Ching-Fu, Zhao, Junxiang, Li, Guangru, Wu, Qianyi, Luo, Hailu, Wen, Shuangchun, Liu, Zhaowei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: National Academy of Sciences 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6561260/
https://www.ncbi.nlm.nih.gov/pubmed/31101711
http://dx.doi.org/10.1073/pnas.1820636116
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author Zhou, Junxiao
Qian, Haoliang
Chen, Ching-Fu
Zhao, Junxiang
Li, Guangru
Wu, Qianyi
Luo, Hailu
Wen, Shuangchun
Liu, Zhaowei
author_facet Zhou, Junxiao
Qian, Haoliang
Chen, Ching-Fu
Zhao, Junxiang
Li, Guangru
Wu, Qianyi
Luo, Hailu
Wen, Shuangchun
Liu, Zhaowei
author_sort Zhou, Junxiao
collection PubMed
description Optical edge detection is a useful method for characterizing boundaries, which is also in the forefront of image processing for object detection. As the field of metamaterials and metasurface is growing fast in an effort to miniaturize optical devices at unprecedented scales, experimental realization of optical edge detection with metamaterials remains a challenge and lags behind theoretical proposals. Here, we propose a mechanism of edge detection based on a Pancharatnam–Berry-phase metasurface. We experimentally demonstrated broadband edge detection using designed dielectric metasurfaces with high optical efficiency. The metasurfaces were fabricated by scanning a focused laser beam inside glass substrate and can be easily integrated with traditional optical components. The proposed edge-detection mechanism may find important applications in image processing, high-contrast microscopy, and real-time object detection on compact optical platforms such as mobile phones and smart cameras.
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spelling pubmed-65612602019-06-17 Optical edge detection based on high-efficiency dielectric metasurface Zhou, Junxiao Qian, Haoliang Chen, Ching-Fu Zhao, Junxiang Li, Guangru Wu, Qianyi Luo, Hailu Wen, Shuangchun Liu, Zhaowei Proc Natl Acad Sci U S A Physical Sciences Optical edge detection is a useful method for characterizing boundaries, which is also in the forefront of image processing for object detection. As the field of metamaterials and metasurface is growing fast in an effort to miniaturize optical devices at unprecedented scales, experimental realization of optical edge detection with metamaterials remains a challenge and lags behind theoretical proposals. Here, we propose a mechanism of edge detection based on a Pancharatnam–Berry-phase metasurface. We experimentally demonstrated broadband edge detection using designed dielectric metasurfaces with high optical efficiency. The metasurfaces were fabricated by scanning a focused laser beam inside glass substrate and can be easily integrated with traditional optical components. The proposed edge-detection mechanism may find important applications in image processing, high-contrast microscopy, and real-time object detection on compact optical platforms such as mobile phones and smart cameras. National Academy of Sciences 2019-06-04 2019-05-17 /pmc/articles/PMC6561260/ /pubmed/31101711 http://dx.doi.org/10.1073/pnas.1820636116 Text en Copyright © 2019 the Author(s). Published by PNAS. https://creativecommons.org/licenses/by-nc-nd/4.0/ https://creativecommons.org/licenses/by-nc-nd/4.0/This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND) (https://creativecommons.org/licenses/by-nc-nd/4.0/) .
spellingShingle Physical Sciences
Zhou, Junxiao
Qian, Haoliang
Chen, Ching-Fu
Zhao, Junxiang
Li, Guangru
Wu, Qianyi
Luo, Hailu
Wen, Shuangchun
Liu, Zhaowei
Optical edge detection based on high-efficiency dielectric metasurface
title Optical edge detection based on high-efficiency dielectric metasurface
title_full Optical edge detection based on high-efficiency dielectric metasurface
title_fullStr Optical edge detection based on high-efficiency dielectric metasurface
title_full_unstemmed Optical edge detection based on high-efficiency dielectric metasurface
title_short Optical edge detection based on high-efficiency dielectric metasurface
title_sort optical edge detection based on high-efficiency dielectric metasurface
topic Physical Sciences
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6561260/
https://www.ncbi.nlm.nih.gov/pubmed/31101711
http://dx.doi.org/10.1073/pnas.1820636116
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