A semi-Dirac point and an electromagnetic topological transition in a dielectric photonic crystal

Handle URI:
http://hdl.handle.net/10754/564856
Title:
A semi-Dirac point and an electromagnetic topological transition in a dielectric photonic crystal
Authors:
Wu, Ying ( 0000-0002-7919-1107 )
Abstract:
Accidental degeneracy in a photonic crystal consisting of a square array of elliptical dielectric cylinders leads to both a semi-Dirac point at the center of the Brillouin zone and an electromagnetic topological transition (ETT). A perturbation method is deduced to affirm the peculiar linear-parabolic dispersion near the semi-Dirac point. An effective medium theory is developed to explain the simultaneous semi-Dirac point and ETT and to show that the photonic crystal is either a zero-refractive-index material or an epsilon-near-zero material at the semi-Dirac point. Drastic changes in the wave manipulation properties at the semi-Dirac point, resulting from ETT, are described.©2014 Optical Society of America.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Applied Mathematics and Computational Science Program; Waves in Complex Media Research Group
Publisher:
The Optical Society
Journal:
Optics Express
Issue Date:
2014
DOI:
10.1364/OE.22.001906
Type:
Article
ISSN:
10944087
Sponsors:
The author is grateful to Prof. Z.Q. Zhang, Prof. C.T. Chan, Prof. J. Li, Prof. J. Mei and Dr. X.Q. Huang for fruitful discussions. Special thanks go to Prof. P. Sheng, Prof. Y. Lai, and Prof. Z.H. Hang for their comments. I also would like to acknowledge insightful comments from anonymous reviewers, which greatly helped to improve the quality of this paper. I thank V. Unkefer for editorial work on this manuscript. This work was supported by KAUST Baseline Research Funds.
Appears in Collections:
Articles; Applied Mathematics and Computational Science Program; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorWu, Yingen
dc.date.accessioned2015-08-04T07:23:14Zen
dc.date.available2015-08-04T07:23:14Zen
dc.date.issued2014en
dc.identifier.issn10944087en
dc.identifier.doi10.1364/OE.22.001906en
dc.identifier.urihttp://hdl.handle.net/10754/564856en
dc.description.abstractAccidental degeneracy in a photonic crystal consisting of a square array of elliptical dielectric cylinders leads to both a semi-Dirac point at the center of the Brillouin zone and an electromagnetic topological transition (ETT). A perturbation method is deduced to affirm the peculiar linear-parabolic dispersion near the semi-Dirac point. An effective medium theory is developed to explain the simultaneous semi-Dirac point and ETT and to show that the photonic crystal is either a zero-refractive-index material or an epsilon-near-zero material at the semi-Dirac point. Drastic changes in the wave manipulation properties at the semi-Dirac point, resulting from ETT, are described.©2014 Optical Society of America.en
dc.description.sponsorshipThe author is grateful to Prof. Z.Q. Zhang, Prof. C.T. Chan, Prof. J. Li, Prof. J. Mei and Dr. X.Q. Huang for fruitful discussions. Special thanks go to Prof. P. Sheng, Prof. Y. Lai, and Prof. Z.H. Hang for their comments. I also would like to acknowledge insightful comments from anonymous reviewers, which greatly helped to improve the quality of this paper. I thank V. Unkefer for editorial work on this manuscript. This work was supported by KAUST Baseline Research Funds.en
dc.publisherThe Optical Societyen
dc.titleA semi-Dirac point and an electromagnetic topological transition in a dielectric photonic crystalen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentApplied Mathematics and Computational Science Programen
dc.contributor.departmentWaves in Complex Media Research Groupen
dc.identifier.journalOptics Expressen
kaust.authorWu, Yingen
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