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Near-infrared tunable metalens based on phase change material Ge(2)Se(2)Te(5)

Metasurfaces draw everyone’s attention because they can precisely control the phase, amplitude and polarization of emergent light to achieve light field control in recent years. As one of the most practicable devices among the many applications of metasurface, metalens can extremely reduce the size...

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Detalles Bibliográficos
Autores principales: Bai, Wei, Yang, Ping, Huang, Jie, Chen, Dingbo, Zhang, Jingjing, Zhang, Zhaojian, Yang, Junbo, Xu, Bing
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6441036/
https://www.ncbi.nlm.nih.gov/pubmed/30926898
http://dx.doi.org/10.1038/s41598-019-41859-x
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author Bai, Wei
Yang, Ping
Huang, Jie
Chen, Dingbo
Zhang, Jingjing
Zhang, Zhaojian
Yang, Junbo
Xu, Bing
author_facet Bai, Wei
Yang, Ping
Huang, Jie
Chen, Dingbo
Zhang, Jingjing
Zhang, Zhaojian
Yang, Junbo
Xu, Bing
author_sort Bai, Wei
collection PubMed
description Metasurfaces draw everyone’s attention because they can precisely control the phase, amplitude and polarization of emergent light to achieve light field control in recent years. As one of the most practicable devices among the many applications of metasurface, metalens can extremely reduce the size as well as complexity of optical systems and realizes the higher optical quality compared with conventional lens. So it will be very potential to use metalens in integration systems to reaching higher integration and efficiency. In addition, dynamic control is always desirable in optical systems. In this work, we firstly design a near-infrared tunable metalens treating phase change materials as the meta-atoms which makes the tunable metalens become more compact. At designed wavelength of 1.55 μm, the focusing efficiency of our amorphous metalens is more than 16 times of the efficiency when it works at crystalline state, and its focal length can stay almost unchanged when the GST state is switched. The broadband performance of the metalens is also confirmed. This work may bring some good opportunities for the revolution of the next generation tunable integrated optics.
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spelling pubmed-64410362019-04-04 Near-infrared tunable metalens based on phase change material Ge(2)Se(2)Te(5) Bai, Wei Yang, Ping Huang, Jie Chen, Dingbo Zhang, Jingjing Zhang, Zhaojian Yang, Junbo Xu, Bing Sci Rep Article Metasurfaces draw everyone’s attention because they can precisely control the phase, amplitude and polarization of emergent light to achieve light field control in recent years. As one of the most practicable devices among the many applications of metasurface, metalens can extremely reduce the size as well as complexity of optical systems and realizes the higher optical quality compared with conventional lens. So it will be very potential to use metalens in integration systems to reaching higher integration and efficiency. In addition, dynamic control is always desirable in optical systems. In this work, we firstly design a near-infrared tunable metalens treating phase change materials as the meta-atoms which makes the tunable metalens become more compact. At designed wavelength of 1.55 μm, the focusing efficiency of our amorphous metalens is more than 16 times of the efficiency when it works at crystalline state, and its focal length can stay almost unchanged when the GST state is switched. The broadband performance of the metalens is also confirmed. This work may bring some good opportunities for the revolution of the next generation tunable integrated optics. Nature Publishing Group UK 2019-03-29 /pmc/articles/PMC6441036/ /pubmed/30926898 http://dx.doi.org/10.1038/s41598-019-41859-x Text en © The Author(s) 2019 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
Bai, Wei
Yang, Ping
Huang, Jie
Chen, Dingbo
Zhang, Jingjing
Zhang, Zhaojian
Yang, Junbo
Xu, Bing
Near-infrared tunable metalens based on phase change material Ge(2)Se(2)Te(5)
title Near-infrared tunable metalens based on phase change material Ge(2)Se(2)Te(5)
title_full Near-infrared tunable metalens based on phase change material Ge(2)Se(2)Te(5)
title_fullStr Near-infrared tunable metalens based on phase change material Ge(2)Se(2)Te(5)
title_full_unstemmed Near-infrared tunable metalens based on phase change material Ge(2)Se(2)Te(5)
title_short Near-infrared tunable metalens based on phase change material Ge(2)Se(2)Te(5)
title_sort near-infrared tunable metalens based on phase change material ge(2)se(2)te(5)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6441036/
https://www.ncbi.nlm.nih.gov/pubmed/30926898
http://dx.doi.org/10.1038/s41598-019-41859-x
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