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Precise identification of Dirac-like point through a finite photonic crystal square matrix

The phenomena of the minimum transmittance spectrum or the maximum reflection spectrum located around the Dirac frequency have been observed to demonstrate the 1/L scaling law near the Dirac-like point through the finite ribbon structure. However, so far there is no effective way to identify the Dir...

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Detalles Bibliográficos
Autores principales: Dong, Guoyan, Zhou, Ji, Yang, Xiulun, Meng, Xiangfeng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5114599/
https://www.ncbi.nlm.nih.gov/pubmed/27857145
http://dx.doi.org/10.1038/srep36712
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author Dong, Guoyan
Zhou, Ji
Yang, Xiulun
Meng, Xiangfeng
author_facet Dong, Guoyan
Zhou, Ji
Yang, Xiulun
Meng, Xiangfeng
author_sort Dong, Guoyan
collection PubMed
description The phenomena of the minimum transmittance spectrum or the maximum reflection spectrum located around the Dirac frequency have been observed to demonstrate the 1/L scaling law near the Dirac-like point through the finite ribbon structure. However, so far there is no effective way to identify the Dirac-like point accurately. In this work we provide an effective measurement method to identify the Dirac-like point accurately through a finite photonic crystal square matrix. Based on the Dirac-like dispersion achieved by the accidental degeneracy at the centre of the Brillouin zone of dielectric photonic crystal, both the simulated and experimental results demonstrate that the transmittance spectra through a finite photonic crystal square matrix not only provide the clear evidence for the existence of Dirac-like point but also can be used to identify the precise location of Dirac-like point by the characteristics of sharp cusps embedded in the extremum spectra surrounding the conical singularity.
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spelling pubmed-51145992016-11-25 Precise identification of Dirac-like point through a finite photonic crystal square matrix Dong, Guoyan Zhou, Ji Yang, Xiulun Meng, Xiangfeng Sci Rep Article The phenomena of the minimum transmittance spectrum or the maximum reflection spectrum located around the Dirac frequency have been observed to demonstrate the 1/L scaling law near the Dirac-like point through the finite ribbon structure. However, so far there is no effective way to identify the Dirac-like point accurately. In this work we provide an effective measurement method to identify the Dirac-like point accurately through a finite photonic crystal square matrix. Based on the Dirac-like dispersion achieved by the accidental degeneracy at the centre of the Brillouin zone of dielectric photonic crystal, both the simulated and experimental results demonstrate that the transmittance spectra through a finite photonic crystal square matrix not only provide the clear evidence for the existence of Dirac-like point but also can be used to identify the precise location of Dirac-like point by the characteristics of sharp cusps embedded in the extremum spectra surrounding the conical singularity. Nature Publishing Group 2016-11-18 /pmc/articles/PMC5114599/ /pubmed/27857145 http://dx.doi.org/10.1038/srep36712 Text en Copyright © 2016, The Author(s) 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
Dong, Guoyan
Zhou, Ji
Yang, Xiulun
Meng, Xiangfeng
Precise identification of Dirac-like point through a finite photonic crystal square matrix
title Precise identification of Dirac-like point through a finite photonic crystal square matrix
title_full Precise identification of Dirac-like point through a finite photonic crystal square matrix
title_fullStr Precise identification of Dirac-like point through a finite photonic crystal square matrix
title_full_unstemmed Precise identification of Dirac-like point through a finite photonic crystal square matrix
title_short Precise identification of Dirac-like point through a finite photonic crystal square matrix
title_sort precise identification of dirac-like point through a finite photonic crystal square matrix
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5114599/
https://www.ncbi.nlm.nih.gov/pubmed/27857145
http://dx.doi.org/10.1038/srep36712
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