A Metasurface Beam Combiner Based on the Control of Angular Response

Beam combiners are widely used in various optical applications including optical communication and smart detection, which spatially overlap multiple input beams and integrate a output beam with higher intensity, multiple wavelengths, coherent phase, etc. Since conventional beam combiners consist of...

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Autores principales:	Zhihao Liu, Weibin Feng, Yong Long, Songming Guo, Haowen Liang, Zhiren Qiu, Xiao Fu, Juntao Li
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	metasurface angular response beam combining Applied optics. Photonics TA1501-1820
Acceso en línea:	https://doaj.org/article/49cee85cbf1947ad8b6b9855d269d22d
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id	oai:doaj.org-article:49cee85cbf1947ad8b6b9855d269d22d
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spelling	oai:doaj.org-article:49cee85cbf1947ad8b6b9855d269d22d2021-11-25T18:43:18ZA Metasurface Beam Combiner Based on the Control of Angular Response10.3390/photonics81104892304-6732https://doaj.org/article/49cee85cbf1947ad8b6b9855d269d22d2021-11-01T00:00:00Zhttps://www.mdpi.com/2304-6732/8/11/489https://doaj.org/toc/2304-6732Beam combiners are widely used in various optical applications including optical communication and smart detection, which spatially overlap multiple input beams and integrate a output beam with higher intensity, multiple wavelengths, coherent phase, etc. Since conventional beam combiners consist of various optical components with different working principles depending on the properties of incident light, they are usually bulky and have certain restrictions on the incident light. In recent years, metasurfaces have received much attention and become a rapidly developing research field. Their novel mechanisms and flexible structural design provide a promising way to realize miniaturized and integrated components in optical systems. In this paper, we start from studying the ability of metasurfaces to manipulate the incident wavefront, and then propose a metasurface beam combiner in theory that generates an extraordinary refracted beam based on the principle of phase gradient metasurface. This metasurface combines two monochromatic light incidents at different angles with identical polarization but arbitrary amplitudes and initial phases. The combining efficiency, which is defined as the ratio of the power in the combining direction to the total incident power, is 42.4% at the working wavelength of 980 nm. The simulated results indicate that this proposed method is able to simplify the design of optical combiners, making them miniaturized and integrated for smart optical systems.Zhihao LiuWeibin FengYong LongSongming GuoHaowen LiangZhiren QiuXiao FuJuntao LiMDPI AGarticlemetasurfaceangular responsebeam combiningApplied optics. PhotonicsTA1501-1820ENPhotonics, Vol 8, Iss 489, p 489 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	metasurface angular response beam combining Applied optics. Photonics TA1501-1820
spellingShingle	metasurface angular response beam combining Applied optics. Photonics TA1501-1820 Zhihao Liu Weibin Feng Yong Long Songming Guo Haowen Liang Zhiren Qiu Xiao Fu Juntao Li A Metasurface Beam Combiner Based on the Control of Angular Response
description	Beam combiners are widely used in various optical applications including optical communication and smart detection, which spatially overlap multiple input beams and integrate a output beam with higher intensity, multiple wavelengths, coherent phase, etc. Since conventional beam combiners consist of various optical components with different working principles depending on the properties of incident light, they are usually bulky and have certain restrictions on the incident light. In recent years, metasurfaces have received much attention and become a rapidly developing research field. Their novel mechanisms and flexible structural design provide a promising way to realize miniaturized and integrated components in optical systems. In this paper, we start from studying the ability of metasurfaces to manipulate the incident wavefront, and then propose a metasurface beam combiner in theory that generates an extraordinary refracted beam based on the principle of phase gradient metasurface. This metasurface combines two monochromatic light incidents at different angles with identical polarization but arbitrary amplitudes and initial phases. The combining efficiency, which is defined as the ratio of the power in the combining direction to the total incident power, is 42.4% at the working wavelength of 980 nm. The simulated results indicate that this proposed method is able to simplify the design of optical combiners, making them miniaturized and integrated for smart optical systems.
format	article
author	Zhihao Liu Weibin Feng Yong Long Songming Guo Haowen Liang Zhiren Qiu Xiao Fu Juntao Li
author_facet	Zhihao Liu Weibin Feng Yong Long Songming Guo Haowen Liang Zhiren Qiu Xiao Fu Juntao Li
author_sort	Zhihao Liu
title	A Metasurface Beam Combiner Based on the Control of Angular Response
title_short	A Metasurface Beam Combiner Based on the Control of Angular Response
title_full	A Metasurface Beam Combiner Based on the Control of Angular Response
title_fullStr	A Metasurface Beam Combiner Based on the Control of Angular Response
title_full_unstemmed	A Metasurface Beam Combiner Based on the Control of Angular Response
title_sort	metasurface beam combiner based on the control of angular response
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/49cee85cbf1947ad8b6b9855d269d22d
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A Metasurface Beam Combiner Based on the Control of Angular Response

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