Combining ε-Near-Zero Behavior and Stopped Light Energy Bands for Ultra-Low Reflection and Reduced Dispersion of Slow Light

Abstract We investigate media which exhibits epsilon-near-zero (ENZ) behavior while simultaneously sustaining stopped light energy bands which contain multiple points of zero group velocity (ZGV). This allows the merging of state-of-the-art phenomena that was hitherto attainable in media that demons...

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Autores principales:	Frank Bello, A. Freddie Page, Andreas Pusch, Joachim M. Hamm, John F. Donegan, Ortwin Hess
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/05e812c77f5a481da92766ddf1961f62
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spelling	oai:doaj.org-article:05e812c77f5a481da92766ddf1961f622021-12-02T15:04:55ZCombining ε-Near-Zero Behavior and Stopped Light Energy Bands for Ultra-Low Reflection and Reduced Dispersion of Slow Light10.1038/s41598-017-08342-x2045-2322https://doaj.org/article/05e812c77f5a481da92766ddf1961f622017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08342-xhttps://doaj.org/toc/2045-2322Abstract We investigate media which exhibits epsilon-near-zero (ENZ) behavior while simultaneously sustaining stopped light energy bands which contain multiple points of zero group velocity (ZGV). This allows the merging of state-of-the-art phenomena that was hitherto attainable in media that demonstrated these traits separately. Specifically, we demonstrate the existence of Ferrell-Berreman (FB) modes within frequency bands bounded by points of ZGV with the goal to improve the coupling efficiency and localization of light in the media. The FB mode is formed within a double layer, thin-film stack where at subwavelength thicknesses the structure exhibits a very low reflection due to ENZ behavior. In addition, the structure is engineered to promote a flattened frequency dispersion with a negative permittivity able to induce multiple points of ZGV. For proof-of-concept, we propose an oxide-semiconductor-oxide-insulator stack and discuss the useful optical properties that arise from combining both phenomena. A transfer matrix (TM) treatment is used to derive the reflectivity profile and dispersion curves. Results show the ability to reduce reflection below 0.05% in accordance with recent experimental data while simultaneously exciting a polariton mode exhibiting both reduced group velocity and group velocity dispersion (GVD).Frank BelloA. Freddie PageAndreas PuschJoachim M. HammJohn F. DoneganOrtwin HessNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Frank Bello A. Freddie Page Andreas Pusch Joachim M. Hamm John F. Donegan Ortwin Hess Combining ε-Near-Zero Behavior and Stopped Light Energy Bands for Ultra-Low Reflection and Reduced Dispersion of Slow Light
description	Abstract We investigate media which exhibits epsilon-near-zero (ENZ) behavior while simultaneously sustaining stopped light energy bands which contain multiple points of zero group velocity (ZGV). This allows the merging of state-of-the-art phenomena that was hitherto attainable in media that demonstrated these traits separately. Specifically, we demonstrate the existence of Ferrell-Berreman (FB) modes within frequency bands bounded by points of ZGV with the goal to improve the coupling efficiency and localization of light in the media. The FB mode is formed within a double layer, thin-film stack where at subwavelength thicknesses the structure exhibits a very low reflection due to ENZ behavior. In addition, the structure is engineered to promote a flattened frequency dispersion with a negative permittivity able to induce multiple points of ZGV. For proof-of-concept, we propose an oxide-semiconductor-oxide-insulator stack and discuss the useful optical properties that arise from combining both phenomena. A transfer matrix (TM) treatment is used to derive the reflectivity profile and dispersion curves. Results show the ability to reduce reflection below 0.05% in accordance with recent experimental data while simultaneously exciting a polariton mode exhibiting both reduced group velocity and group velocity dispersion (GVD).
format	article
author	Frank Bello A. Freddie Page Andreas Pusch Joachim M. Hamm John F. Donegan Ortwin Hess
author_facet	Frank Bello A. Freddie Page Andreas Pusch Joachim M. Hamm John F. Donegan Ortwin Hess
author_sort	Frank Bello
title	Combining ε-Near-Zero Behavior and Stopped Light Energy Bands for Ultra-Low Reflection and Reduced Dispersion of Slow Light
title_short	Combining ε-Near-Zero Behavior and Stopped Light Energy Bands for Ultra-Low Reflection and Reduced Dispersion of Slow Light
title_full	Combining ε-Near-Zero Behavior and Stopped Light Energy Bands for Ultra-Low Reflection and Reduced Dispersion of Slow Light
title_fullStr	Combining ε-Near-Zero Behavior and Stopped Light Energy Bands for Ultra-Low Reflection and Reduced Dispersion of Slow Light
title_full_unstemmed	Combining ε-Near-Zero Behavior and Stopped Light Energy Bands for Ultra-Low Reflection and Reduced Dispersion of Slow Light
title_sort	combining ε-near-zero behavior and stopped light energy bands for ultra-low reflection and reduced dispersion of slow light
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/05e812c77f5a481da92766ddf1961f62
work_keys_str_mv	AT frankbello combiningenearzerobehaviorandstoppedlightenergybandsforultralowreflectionandreduceddispersionofslowlight AT afreddiepage combiningenearzerobehaviorandstoppedlightenergybandsforultralowreflectionandreduceddispersionofslowlight AT andreaspusch combiningenearzerobehaviorandstoppedlightenergybandsforultralowreflectionandreduceddispersionofslowlight AT joachimmhamm combiningenearzerobehaviorandstoppedlightenergybandsforultralowreflectionandreduceddispersionofslowlight AT johnfdonegan combiningenearzerobehaviorandstoppedlightenergybandsforultralowreflectionandreduceddispersionofslowlight AT ortwinhess combiningenearzerobehaviorandstoppedlightenergybandsforultralowreflectionandreduceddispersionofslowlight
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Combining ε-Near-Zero Behavior and Stopped Light Energy Bands for Ultra-Low Reflection and Reduced Dispersion of Slow Light

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