Bound states in the continuum in periodic structures with structural disorder

We study the effect of structural disorder on the transition from the bound states in the continuum (BICs) to quasi-BICs by the example of the periodic photonic structure composed of two layers of parallel dielectric rods. We uncover the specificity in the robustness of the symmetry-protected and ac...

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Autores principales:	Maslova Ekaterina E., Rybin Mikhail V., Bogdanov Andrey A., Sadrieva Zarina F.
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	bound states in the continuum metasurface spatial localization structural disorder Physics QC1-999
Acceso en línea:	https://doaj.org/article/f74c47b2bbbb4c31ac87aeb696691c73
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spelling	oai:doaj.org-article:f74c47b2bbbb4c31ac87aeb696691c732021-12-05T14:10:56ZBound states in the continuum in periodic structures with structural disorder2192-861410.1515/nanoph-2021-0475https://doaj.org/article/f74c47b2bbbb4c31ac87aeb696691c732021-11-01T00:00:00Zhttps://doi.org/10.1515/nanoph-2021-0475https://doaj.org/toc/2192-8614We study the effect of structural disorder on the transition from the bound states in the continuum (BICs) to quasi-BICs by the example of the periodic photonic structure composed of two layers of parallel dielectric rods. We uncover the specificity in the robustness of the symmetry-protected and accidental BICs against various types of structural disorder. We analyze how the spatial mode localization induced by the structural disorder results in an effective reduction of the system length and limits the Q factor of quasi-BICs. Our results are essential for the practical implementation of BICs especially in natural and self-assembled photonic structures, where the structural disorder plays a crucial role.Maslova Ekaterina E.Rybin Mikhail V.Bogdanov Andrey A.Sadrieva Zarina F.De Gruyterarticlebound states in the continuummetasurfacespatial localizationstructural disorderPhysicsQC1-999ENNanophotonics, Vol 10, Iss 17, Pp 4313-4321 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	bound states in the continuum metasurface spatial localization structural disorder Physics QC1-999
spellingShingle	bound states in the continuum metasurface spatial localization structural disorder Physics QC1-999 Maslova Ekaterina E. Rybin Mikhail V. Bogdanov Andrey A. Sadrieva Zarina F. Bound states in the continuum in periodic structures with structural disorder
description	We study the effect of structural disorder on the transition from the bound states in the continuum (BICs) to quasi-BICs by the example of the periodic photonic structure composed of two layers of parallel dielectric rods. We uncover the specificity in the robustness of the symmetry-protected and accidental BICs against various types of structural disorder. We analyze how the spatial mode localization induced by the structural disorder results in an effective reduction of the system length and limits the Q factor of quasi-BICs. Our results are essential for the practical implementation of BICs especially in natural and self-assembled photonic structures, where the structural disorder plays a crucial role.
format	article
author	Maslova Ekaterina E. Rybin Mikhail V. Bogdanov Andrey A. Sadrieva Zarina F.
author_facet	Maslova Ekaterina E. Rybin Mikhail V. Bogdanov Andrey A. Sadrieva Zarina F.
author_sort	Maslova Ekaterina E.
title	Bound states in the continuum in periodic structures with structural disorder
title_short	Bound states in the continuum in periodic structures with structural disorder
title_full	Bound states in the continuum in periodic structures with structural disorder
title_fullStr	Bound states in the continuum in periodic structures with structural disorder
title_full_unstemmed	Bound states in the continuum in periodic structures with structural disorder
title_sort	bound states in the continuum in periodic structures with structural disorder
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/f74c47b2bbbb4c31ac87aeb696691c73
work_keys_str_mv	AT maslovaekaterinae boundstatesinthecontinuuminperiodicstructureswithstructuraldisorder AT rybinmikhailv boundstatesinthecontinuuminperiodicstructureswithstructuraldisorder AT bogdanovandreya boundstatesinthecontinuuminperiodicstructureswithstructuraldisorder AT sadrievazarinaf boundstatesinthecontinuuminperiodicstructureswithstructuraldisorder
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Bound states in the continuum in periodic structures with structural disorder

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