Optical telescope with Cassegrain metasurfaces

The Cassegrain telescope, made of a concave primary mirror and a convex secondary mirror, is widely utilized for modern astronomical observation. However, the existence of curved mirrors inevitably results in bulky configurations. Here, we propose a new design of the miniaturized Cassegrain telescop...

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Main Authors:	Liu Xuan, Deng Junhong, Li King Fai, Jin Mingke, Tang Yutao, Zhang Xuecai, Cheng Xing, Wang Hong, Liu Wei, Li Guixin
Format:	Article
Language:	English
Published:	De Gruyter 2020-04-01
Series:	Nanophotonics
Subjects:	metasurface nanofabrication metamaterials
Online Access:	https://doi.org/10.1515/nanoph-2020-0012

id	doaj-c3ae772203264c17ace9c1056a365aae
record_format	Article
spelling	doaj-c3ae772203264c17ace9c1056a365aae2021-09-06T19:20:34ZengDe GruyterNanophotonics2192-86062192-86142020-04-019103263326910.1515/nanoph-2020-0012nanoph-2020-0012Optical telescope with Cassegrain metasurfacesLiu Xuan0Deng Junhong1Li King Fai2Jin Mingke3Tang Yutao4Zhang Xuecai5Cheng Xing6Wang Hong7Liu Wei8Li Guixin9Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaCollege for Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, ChinaDepartment of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaThe Cassegrain telescope, made of a concave primary mirror and a convex secondary mirror, is widely utilized for modern astronomical observation. However, the existence of curved mirrors inevitably results in bulky configurations. Here, we propose a new design of the miniaturized Cassegrain telescope by replacing the curved mirrors with planar reflective metasurfaces. The focusing and imaging properties of the Cassegrain metasurface telescopes are experimentally verified for circularly polarized incident light at near infrared wavelengths. The concept of the metasurface telescopes can be employed for applications in telescopes working at infrared, Terahertz, and microwave and even radio frequencies.https://doi.org/10.1515/nanoph-2020-0012metasurfacenanofabricationmetamaterials
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Liu Xuan Deng Junhong Li King Fai Jin Mingke Tang Yutao Zhang Xuecai Cheng Xing Wang Hong Liu Wei Li Guixin
spellingShingle	Liu Xuan Deng Junhong Li King Fai Jin Mingke Tang Yutao Zhang Xuecai Cheng Xing Wang Hong Liu Wei Li Guixin Optical telescope with Cassegrain metasurfaces Nanophotonics metasurface nanofabrication metamaterials
author_facet	Liu Xuan Deng Junhong Li King Fai Jin Mingke Tang Yutao Zhang Xuecai Cheng Xing Wang Hong Liu Wei Li Guixin
author_sort	Liu Xuan
title	Optical telescope with Cassegrain metasurfaces
title_short	Optical telescope with Cassegrain metasurfaces
title_full	Optical telescope with Cassegrain metasurfaces
title_fullStr	Optical telescope with Cassegrain metasurfaces
title_full_unstemmed	Optical telescope with Cassegrain metasurfaces
title_sort	optical telescope with cassegrain metasurfaces
publisher	De Gruyter
series	Nanophotonics
issn	2192-8606 2192-8614
publishDate	2020-04-01
description	The Cassegrain telescope, made of a concave primary mirror and a convex secondary mirror, is widely utilized for modern astronomical observation. However, the existence of curved mirrors inevitably results in bulky configurations. Here, we propose a new design of the miniaturized Cassegrain telescope by replacing the curved mirrors with planar reflective metasurfaces. The focusing and imaging properties of the Cassegrain metasurface telescopes are experimentally verified for circularly polarized incident light at near infrared wavelengths. The concept of the metasurface telescopes can be employed for applications in telescopes working at infrared, Terahertz, and microwave and even radio frequencies.
topic	metasurface nanofabrication metamaterials
url	https://doi.org/10.1515/nanoph-2020-0012
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Optical telescope with Cassegrain metasurfaces

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