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Doubly Resonant Optical Periodic Structure

Periodic structures are well known in various branches of physics for their ability to provide a stopband. In this article, using optical periodic structures we showed that, when a second periodicity – very closed to the original periodicity is introduced, large number of states appears in the stopb...

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Detalles Bibliográficos
Autores principales: Alagappan, G., Png, C. E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4744939/
https://www.ncbi.nlm.nih.gov/pubmed/26853945
http://dx.doi.org/10.1038/srep20590
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author Alagappan, G.
Png, C. E.
author_facet Alagappan, G.
Png, C. E.
author_sort Alagappan, G.
collection PubMed
description Periodic structures are well known in various branches of physics for their ability to provide a stopband. In this article, using optical periodic structures we showed that, when a second periodicity – very closed to the original periodicity is introduced, large number of states appears in the stopband corresponding to the first periodicity. In the limit where the two periods matches, we have a continuum of states, and the original stopband completely disappears. This intriguing phenomena is uncovered by noticing that, regardless of the proximities of the two periodicities, there is an array of spatial points where the dielectric functions corresponding to the two periodicities interfere destructively. These spatial points mimic photonic atoms by satisfying the standards equations of quantum harmonic oscillators, and exhibit lossless, atom-like dispersions.
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spelling pubmed-47449392016-02-16 Doubly Resonant Optical Periodic Structure Alagappan, G. Png, C. E. Sci Rep Article Periodic structures are well known in various branches of physics for their ability to provide a stopband. In this article, using optical periodic structures we showed that, when a second periodicity – very closed to the original periodicity is introduced, large number of states appears in the stopband corresponding to the first periodicity. In the limit where the two periods matches, we have a continuum of states, and the original stopband completely disappears. This intriguing phenomena is uncovered by noticing that, regardless of the proximities of the two periodicities, there is an array of spatial points where the dielectric functions corresponding to the two periodicities interfere destructively. These spatial points mimic photonic atoms by satisfying the standards equations of quantum harmonic oscillators, and exhibit lossless, atom-like dispersions. Nature Publishing Group 2016-02-08 /pmc/articles/PMC4744939/ /pubmed/26853945 http://dx.doi.org/10.1038/srep20590 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Alagappan, G.
Png, C. E.
Doubly Resonant Optical Periodic Structure
title Doubly Resonant Optical Periodic Structure
title_full Doubly Resonant Optical Periodic Structure
title_fullStr Doubly Resonant Optical Periodic Structure
title_full_unstemmed Doubly Resonant Optical Periodic Structure
title_short Doubly Resonant Optical Periodic Structure
title_sort doubly resonant optical periodic structure
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4744939/
https://www.ncbi.nlm.nih.gov/pubmed/26853945
http://dx.doi.org/10.1038/srep20590
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