Efficient radiational outcoupling of electromagnetic energy from hyperbolic metamaterial resonators

Abstract Hyperbolic metamaterials were initially proposed in optics to boost radiation efficiencies of quantum emitters. Adopting this concept for antenna design allows approaching long-standing contests in radio physics. For example, broadband impedance matching, accompanied with moderately high an...

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Autores principales:	Ildar Yusupov, Dmitry Filonov, Tatyana Vosheva, Viktor Podolskiy, Pavel Ginzburg
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/967e04cc891d44aa9541b48517f6d315
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spelling	oai:doaj.org-article:967e04cc891d44aa9541b48517f6d3152021-12-02T12:42:27ZEfficient radiational outcoupling of electromagnetic energy from hyperbolic metamaterial resonators10.1038/s41598-020-78981-02045-2322https://doaj.org/article/967e04cc891d44aa9541b48517f6d3152020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78981-0https://doaj.org/toc/2045-2322Abstract Hyperbolic metamaterials were initially proposed in optics to boost radiation efficiencies of quantum emitters. Adopting this concept for antenna design allows approaching long-standing contests in radio physics. For example, broadband impedance matching, accompanied with moderately high antenna gain, is among the existent challenges. Here we propose employing hyperbolic metamaterials for a broadband impedance matching, while a structured layer on top of a metamaterials slab ensures an efficient and directive energy outcoupling to a free space. In particular, a subwavelength loop antenna, placed underneath the matching layer, efficiently excites bulk metamaterial modes, which have well-resolved spatial–temporal separation owing to the hypebolicity of effective permeability tensor. Interplaying chromatic and modal dispersions enable to map different frequencies into non overlapping spatial locations within a compact subwavelength hyperbolic slab. The outcoupling of energy to the free space is obtained by patterning the slab with additional resonant elements, e.g. high index dielectric spheres. As the result, two-order of magnitude improvement in linear gain of the device is predicted. The proposed new architecture can find a use in applications, where multiband or broadband compact devices are required.Ildar YusupovDmitry FilonovTatyana VoshevaViktor PodolskiyPavel GinzburgNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-7 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ildar Yusupov Dmitry Filonov Tatyana Vosheva Viktor Podolskiy Pavel Ginzburg Efficient radiational outcoupling of electromagnetic energy from hyperbolic metamaterial resonators
description	Abstract Hyperbolic metamaterials were initially proposed in optics to boost radiation efficiencies of quantum emitters. Adopting this concept for antenna design allows approaching long-standing contests in radio physics. For example, broadband impedance matching, accompanied with moderately high antenna gain, is among the existent challenges. Here we propose employing hyperbolic metamaterials for a broadband impedance matching, while a structured layer on top of a metamaterials slab ensures an efficient and directive energy outcoupling to a free space. In particular, a subwavelength loop antenna, placed underneath the matching layer, efficiently excites bulk metamaterial modes, which have well-resolved spatial–temporal separation owing to the hypebolicity of effective permeability tensor. Interplaying chromatic and modal dispersions enable to map different frequencies into non overlapping spatial locations within a compact subwavelength hyperbolic slab. The outcoupling of energy to the free space is obtained by patterning the slab with additional resonant elements, e.g. high index dielectric spheres. As the result, two-order of magnitude improvement in linear gain of the device is predicted. The proposed new architecture can find a use in applications, where multiband or broadband compact devices are required.
format	article
author	Ildar Yusupov Dmitry Filonov Tatyana Vosheva Viktor Podolskiy Pavel Ginzburg
author_facet	Ildar Yusupov Dmitry Filonov Tatyana Vosheva Viktor Podolskiy Pavel Ginzburg
author_sort	Ildar Yusupov
title	Efficient radiational outcoupling of electromagnetic energy from hyperbolic metamaterial resonators
title_short	Efficient radiational outcoupling of electromagnetic energy from hyperbolic metamaterial resonators
title_full	Efficient radiational outcoupling of electromagnetic energy from hyperbolic metamaterial resonators
title_fullStr	Efficient radiational outcoupling of electromagnetic energy from hyperbolic metamaterial resonators
title_full_unstemmed	Efficient radiational outcoupling of electromagnetic energy from hyperbolic metamaterial resonators
title_sort	efficient radiational outcoupling of electromagnetic energy from hyperbolic metamaterial resonators
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/967e04cc891d44aa9541b48517f6d315
work_keys_str_mv	AT ildaryusupov efficientradiationaloutcouplingofelectromagneticenergyfromhyperbolicmetamaterialresonators AT dmitryfilonov efficientradiationaloutcouplingofelectromagneticenergyfromhyperbolicmetamaterialresonators AT tatyanavosheva efficientradiationaloutcouplingofelectromagneticenergyfromhyperbolicmetamaterialresonators AT viktorpodolskiy efficientradiationaloutcouplingofelectromagneticenergyfromhyperbolicmetamaterialresonators AT pavelginzburg efficientradiationaloutcouplingofelectromagneticenergyfromhyperbolicmetamaterialresonators
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Efficient radiational outcoupling of electromagnetic energy from hyperbolic metamaterial resonators

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