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Dynamically Tunable Resonant Strength in Electromagnetically Induced Transparency (EIT) Analogue by Hybrid Metal-Graphene Metamaterials

In this paper, a novel method to realize a dynamically tunable analogue of EIT for the resonance strength rather than the resonance frequency is proposed in the terahertz spectrum. The introduced method is composed of a metal EIT-like structure, in which a distinct EIT phenomenon resulting from the...

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Autores principales: Lao, Chaode, Liang, Yaoyao, Wang, Xianjun, Fan, Haihua, Wang, Faqiang, Meng, Hongyun, Guo, Jianping, Liu, Hongzhan, Wei, Zhongchao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6409833/
https://www.ncbi.nlm.nih.gov/pubmed/30704085
http://dx.doi.org/10.3390/nano9020171
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author Lao, Chaode
Liang, Yaoyao
Wang, Xianjun
Fan, Haihua
Wang, Faqiang
Meng, Hongyun
Guo, Jianping
Liu, Hongzhan
Wei, Zhongchao
author_facet Lao, Chaode
Liang, Yaoyao
Wang, Xianjun
Fan, Haihua
Wang, Faqiang
Meng, Hongyun
Guo, Jianping
Liu, Hongzhan
Wei, Zhongchao
author_sort Lao, Chaode
collection PubMed
description In this paper, a novel method to realize a dynamically tunable analogue of EIT for the resonance strength rather than the resonance frequency is proposed in the terahertz spectrum. The introduced method is composed of a metal EIT-like structure, in which a distinct EIT phenomenon resulting from the near field coupling between bright and dark mode resonators can be obtained, as well as an integrated monolayer graphene ribbon under the dark mode resonator that can continuously adjust the resonance strength of transparency peak by changing the Fermi level of the graphene. Comparing structures that need to be modulated individually for each unit cell of the metamaterials, the proposed modulation mechanism was convenient for achieving synchronous operations for all unit cells. This work demonstrates a new platform of modulating the EIT analogue and paves the way to design terahertz functional devices which meet the needs of optical networks and terahertz communications.
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spelling pubmed-64098332019-03-11 Dynamically Tunable Resonant Strength in Electromagnetically Induced Transparency (EIT) Analogue by Hybrid Metal-Graphene Metamaterials Lao, Chaode Liang, Yaoyao Wang, Xianjun Fan, Haihua Wang, Faqiang Meng, Hongyun Guo, Jianping Liu, Hongzhan Wei, Zhongchao Nanomaterials (Basel) Article In this paper, a novel method to realize a dynamically tunable analogue of EIT for the resonance strength rather than the resonance frequency is proposed in the terahertz spectrum. The introduced method is composed of a metal EIT-like structure, in which a distinct EIT phenomenon resulting from the near field coupling between bright and dark mode resonators can be obtained, as well as an integrated monolayer graphene ribbon under the dark mode resonator that can continuously adjust the resonance strength of transparency peak by changing the Fermi level of the graphene. Comparing structures that need to be modulated individually for each unit cell of the metamaterials, the proposed modulation mechanism was convenient for achieving synchronous operations for all unit cells. This work demonstrates a new platform of modulating the EIT analogue and paves the way to design terahertz functional devices which meet the needs of optical networks and terahertz communications. MDPI 2019-01-30 /pmc/articles/PMC6409833/ /pubmed/30704085 http://dx.doi.org/10.3390/nano9020171 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lao, Chaode
Liang, Yaoyao
Wang, Xianjun
Fan, Haihua
Wang, Faqiang
Meng, Hongyun
Guo, Jianping
Liu, Hongzhan
Wei, Zhongchao
Dynamically Tunable Resonant Strength in Electromagnetically Induced Transparency (EIT) Analogue by Hybrid Metal-Graphene Metamaterials
title Dynamically Tunable Resonant Strength in Electromagnetically Induced Transparency (EIT) Analogue by Hybrid Metal-Graphene Metamaterials
title_full Dynamically Tunable Resonant Strength in Electromagnetically Induced Transparency (EIT) Analogue by Hybrid Metal-Graphene Metamaterials
title_fullStr Dynamically Tunable Resonant Strength in Electromagnetically Induced Transparency (EIT) Analogue by Hybrid Metal-Graphene Metamaterials
title_full_unstemmed Dynamically Tunable Resonant Strength in Electromagnetically Induced Transparency (EIT) Analogue by Hybrid Metal-Graphene Metamaterials
title_short Dynamically Tunable Resonant Strength in Electromagnetically Induced Transparency (EIT) Analogue by Hybrid Metal-Graphene Metamaterials
title_sort dynamically tunable resonant strength in electromagnetically induced transparency (eit) analogue by hybrid metal-graphene metamaterials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6409833/
https://www.ncbi.nlm.nih.gov/pubmed/30704085
http://dx.doi.org/10.3390/nano9020171
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