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Diffraction-limited imaging with monolayer 2D material-based ultrathin flat lenses

Ultrathin flat optics allow control of light at the subwavelength scale that is unmatched by traditional refractive optics. To approach the atomically thin limit, the use of 2D materials is an attractive possibility due to their high refractive indices. However, achievement of diffraction-limited fo...

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Autores principales: Lin, Han, Xu, Zai-Quan, Cao, Guiyuan, Zhang, Yupeng, Zhou, Jiadong, Wang, Ziyu, Wan, Zhichen, Liu, Zheng, Loh, Kian Ping, Qiu, Cheng-Wei, Bao, Qiaoliang, Jia, Baohua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7421448/
https://www.ncbi.nlm.nih.gov/pubmed/32821378
http://dx.doi.org/10.1038/s41377-020-00374-9
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author Lin, Han
Xu, Zai-Quan
Cao, Guiyuan
Zhang, Yupeng
Zhou, Jiadong
Wang, Ziyu
Wan, Zhichen
Liu, Zheng
Loh, Kian Ping
Qiu, Cheng-Wei
Bao, Qiaoliang
Jia, Baohua
author_facet Lin, Han
Xu, Zai-Quan
Cao, Guiyuan
Zhang, Yupeng
Zhou, Jiadong
Wang, Ziyu
Wan, Zhichen
Liu, Zheng
Loh, Kian Ping
Qiu, Cheng-Wei
Bao, Qiaoliang
Jia, Baohua
author_sort Lin, Han
collection PubMed
description Ultrathin flat optics allow control of light at the subwavelength scale that is unmatched by traditional refractive optics. To approach the atomically thin limit, the use of 2D materials is an attractive possibility due to their high refractive indices. However, achievement of diffraction-limited focusing and imaging is challenged by their thickness-limited spatial resolution and focusing efficiency. Here we report a universal method to transform 2D monolayers into ultrathin flat lenses. Femtosecond laser direct writing was applied to generate local scattering media inside a monolayer, which overcomes the longstanding challenge of obtaining sufficient phase or amplitude modulation in atomically thin 2D materials. We achieved highly efficient 3D focusing with subwavelength resolution and diffraction-limited imaging. The high focusing performance even allows diffraction-limited imaging at different focal positions with varying magnifications. Our work paves the way for downscaling of optical devices using 2D materials and reports an unprecedented approach for fabricating ultrathin imaging devices.
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spelling pubmed-74214482020-08-18 Diffraction-limited imaging with monolayer 2D material-based ultrathin flat lenses Lin, Han Xu, Zai-Quan Cao, Guiyuan Zhang, Yupeng Zhou, Jiadong Wang, Ziyu Wan, Zhichen Liu, Zheng Loh, Kian Ping Qiu, Cheng-Wei Bao, Qiaoliang Jia, Baohua Light Sci Appl Article Ultrathin flat optics allow control of light at the subwavelength scale that is unmatched by traditional refractive optics. To approach the atomically thin limit, the use of 2D materials is an attractive possibility due to their high refractive indices. However, achievement of diffraction-limited focusing and imaging is challenged by their thickness-limited spatial resolution and focusing efficiency. Here we report a universal method to transform 2D monolayers into ultrathin flat lenses. Femtosecond laser direct writing was applied to generate local scattering media inside a monolayer, which overcomes the longstanding challenge of obtaining sufficient phase or amplitude modulation in atomically thin 2D materials. We achieved highly efficient 3D focusing with subwavelength resolution and diffraction-limited imaging. The high focusing performance even allows diffraction-limited imaging at different focal positions with varying magnifications. Our work paves the way for downscaling of optical devices using 2D materials and reports an unprecedented approach for fabricating ultrathin imaging devices. Nature Publishing Group UK 2020-08-11 /pmc/articles/PMC7421448/ /pubmed/32821378 http://dx.doi.org/10.1038/s41377-020-00374-9 Text en © The Author(s) 2020 https://creativecommons.org/licenses/by/4.0/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/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Lin, Han
Xu, Zai-Quan
Cao, Guiyuan
Zhang, Yupeng
Zhou, Jiadong
Wang, Ziyu
Wan, Zhichen
Liu, Zheng
Loh, Kian Ping
Qiu, Cheng-Wei
Bao, Qiaoliang
Jia, Baohua
Diffraction-limited imaging with monolayer 2D material-based ultrathin flat lenses
title Diffraction-limited imaging with monolayer 2D material-based ultrathin flat lenses
title_full Diffraction-limited imaging with monolayer 2D material-based ultrathin flat lenses
title_fullStr Diffraction-limited imaging with monolayer 2D material-based ultrathin flat lenses
title_full_unstemmed Diffraction-limited imaging with monolayer 2D material-based ultrathin flat lenses
title_short Diffraction-limited imaging with monolayer 2D material-based ultrathin flat lenses
title_sort diffraction-limited imaging with monolayer 2d material-based ultrathin flat lenses
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7421448/
https://www.ncbi.nlm.nih.gov/pubmed/32821378
http://dx.doi.org/10.1038/s41377-020-00374-9
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