A broadband reflective-type half-wave plate employing optical feedbacks

Abstract We propose and demonstrate a type of a broadband half-wave plate that operates in the reflective mode. It consists of a metal grating embedded in a dielectric slab and placed on top of a grounded metal surface. We theoretically show that owing to the optical feedback effect which originates...

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Autores principales:	Gaochao Zhou, Bo Zhu, Junming Zhao, Guanghao Zhu, Biaobing Jin, Yijun Feng, Lin Kang, Weiwei Xu, Jian Chen, Peiheng Wu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fee4e736e17f4ce4b4de829065a3a25d
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spelling	oai:doaj.org-article:fee4e736e17f4ce4b4de829065a3a25d2021-12-02T11:52:29ZA broadband reflective-type half-wave plate employing optical feedbacks10.1038/s41598-017-09561-y2045-2322https://doaj.org/article/fee4e736e17f4ce4b4de829065a3a25d2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-09561-yhttps://doaj.org/toc/2045-2322Abstract We propose and demonstrate a type of a broadband half-wave plate that operates in the reflective mode. It consists of a metal grating embedded in a dielectric slab and placed on top of a grounded metal surface. We theoretically show that owing to the optical feedback effect which originates from the wave reflections at the air-dielectric interface, the proposed half-wave plate exhibits a broadened and flattened response when comparing to the case where the feedback effect is absent. Such a prediction is validated using both numerical and experimental works carried out on a half-wave plate designed at 10 GHz. Moreover, our theoretical analysis also reveals that the half-wave plate has an interesting feature of broad angular response. Taking advantage of these features, we experimentally demonstrate that the proposed device can function as a freely tunable linear polarization converter with polarization conversion residues less than −20 dB in a wide frequency band, under the condition that the incident angle is as large as 45 degrees.Gaochao ZhouBo ZhuJunming ZhaoGuanghao ZhuBiaobing JinYijun FengLin KangWeiwei XuJian ChenPeiheng WuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Gaochao Zhou Bo Zhu Junming Zhao Guanghao Zhu Biaobing Jin Yijun Feng Lin Kang Weiwei Xu Jian Chen Peiheng Wu A broadband reflective-type half-wave plate employing optical feedbacks
description	Abstract We propose and demonstrate a type of a broadband half-wave plate that operates in the reflective mode. It consists of a metal grating embedded in a dielectric slab and placed on top of a grounded metal surface. We theoretically show that owing to the optical feedback effect which originates from the wave reflections at the air-dielectric interface, the proposed half-wave plate exhibits a broadened and flattened response when comparing to the case where the feedback effect is absent. Such a prediction is validated using both numerical and experimental works carried out on a half-wave plate designed at 10 GHz. Moreover, our theoretical analysis also reveals that the half-wave plate has an interesting feature of broad angular response. Taking advantage of these features, we experimentally demonstrate that the proposed device can function as a freely tunable linear polarization converter with polarization conversion residues less than −20 dB in a wide frequency band, under the condition that the incident angle is as large as 45 degrees.
format	article
author	Gaochao Zhou Bo Zhu Junming Zhao Guanghao Zhu Biaobing Jin Yijun Feng Lin Kang Weiwei Xu Jian Chen Peiheng Wu
author_facet	Gaochao Zhou Bo Zhu Junming Zhao Guanghao Zhu Biaobing Jin Yijun Feng Lin Kang Weiwei Xu Jian Chen Peiheng Wu
author_sort	Gaochao Zhou
title	A broadband reflective-type half-wave plate employing optical feedbacks
title_short	A broadband reflective-type half-wave plate employing optical feedbacks
title_full	A broadband reflective-type half-wave plate employing optical feedbacks
title_fullStr	A broadband reflective-type half-wave plate employing optical feedbacks
title_full_unstemmed	A broadband reflective-type half-wave plate employing optical feedbacks
title_sort	broadband reflective-type half-wave plate employing optical feedbacks
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/fee4e736e17f4ce4b4de829065a3a25d
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A broadband reflective-type half-wave plate employing optical feedbacks

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