Spherical Aberration-Corrected Metalens for Polarization Multiplexed Imaging

We present a terahertz spherical aberration-corrected metalens that uses the dynamic phase to achieve polarization multiplexed imaging. The designed metalens has polarization–dependent imaging efficiencies and polarization extinction ratios that exceed 50% and 10:1, respectively. Furthermore, opposi...

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Autores principales:	Shaodong Zhou, Kelei Xi, Songlin Zhuang, Qingqing Cheng
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	terahertz metasurface metalens spherical aberration Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/8759a8557c5f446ebba223d3d69f36ba
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spelling	oai:doaj.org-article:8759a8557c5f446ebba223d3d69f36ba2021-11-25T18:29:43ZSpherical Aberration-Corrected Metalens for Polarization Multiplexed Imaging10.3390/nano111127742079-4991https://doaj.org/article/8759a8557c5f446ebba223d3d69f36ba2021-10-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/2774https://doaj.org/toc/2079-4991We present a terahertz spherical aberration-corrected metalens that uses the dynamic phase to achieve polarization multiplexed imaging. The designed metalens has polarization–dependent imaging efficiencies and polarization extinction ratios that exceed 50% and 10:1, respectively. Furthermore, opposite gradient phases can be applied to orthogonal polarizations to shift the imaging of the two polarized sources in the longitudinal and transverse directions. Indeed, we find that the metalens has a smaller depth-of-focus than a traditional metalens when imaging point sources with limited objective lengths. These results provide a new approach for achieving multifunctional beam steering, tomographic imaging and chiroptical detection.Shaodong ZhouKelei XiSonglin ZhuangQingqing ChengMDPI AGarticleterahertzmetasurfacemetalensspherical aberrationChemistryQD1-999ENNanomaterials, Vol 11, Iss 2774, p 2774 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	terahertz metasurface metalens spherical aberration Chemistry QD1-999
spellingShingle	terahertz metasurface metalens spherical aberration Chemistry QD1-999 Shaodong Zhou Kelei Xi Songlin Zhuang Qingqing Cheng Spherical Aberration-Corrected Metalens for Polarization Multiplexed Imaging
description	We present a terahertz spherical aberration-corrected metalens that uses the dynamic phase to achieve polarization multiplexed imaging. The designed metalens has polarization–dependent imaging efficiencies and polarization extinction ratios that exceed 50% and 10:1, respectively. Furthermore, opposite gradient phases can be applied to orthogonal polarizations to shift the imaging of the two polarized sources in the longitudinal and transverse directions. Indeed, we find that the metalens has a smaller depth-of-focus than a traditional metalens when imaging point sources with limited objective lengths. These results provide a new approach for achieving multifunctional beam steering, tomographic imaging and chiroptical detection.
format	article
author	Shaodong Zhou Kelei Xi Songlin Zhuang Qingqing Cheng
author_facet	Shaodong Zhou Kelei Xi Songlin Zhuang Qingqing Cheng
author_sort	Shaodong Zhou
title	Spherical Aberration-Corrected Metalens for Polarization Multiplexed Imaging
title_short	Spherical Aberration-Corrected Metalens for Polarization Multiplexed Imaging
title_full	Spherical Aberration-Corrected Metalens for Polarization Multiplexed Imaging
title_fullStr	Spherical Aberration-Corrected Metalens for Polarization Multiplexed Imaging
title_full_unstemmed	Spherical Aberration-Corrected Metalens for Polarization Multiplexed Imaging
title_sort	spherical aberration-corrected metalens for polarization multiplexed imaging
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/8759a8557c5f446ebba223d3d69f36ba
work_keys_str_mv	AT shaodongzhou sphericalaberrationcorrectedmetalensforpolarizationmultiplexedimaging AT keleixi sphericalaberrationcorrectedmetalensforpolarizationmultiplexedimaging AT songlinzhuang sphericalaberrationcorrectedmetalensforpolarizationmultiplexedimaging AT qingqingcheng sphericalaberrationcorrectedmetalensforpolarizationmultiplexedimaging
_version_	1718411087174434816

Spherical Aberration-Corrected Metalens for Polarization Multiplexed Imaging

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