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Conical dispersion and effective zero refractive index in photonic quasicrystals.

It is recognized that for a certain class of periodic photonic crystals, conical dispersion can be related to a zero-refractive index. It is not obvious whether such a notion can be extended to a noncrystalline system. We show that certain photonic quasicrystalline approximants have conical dispersi... Full description

Journal Title: Physical review letters April 24, 2015, Vol.114(16), p.163901
Main Author: Dong, Jian-Wen
Other Authors: Chang, Ming-Li , Huang, Xue-Qin , Hang, Zhi Hong , Zhong, Zhi-Chao , Chen, Wen-Jie , Huang, Zhan-Yun , Chan, C T
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1079-7114
Link: http://search.proquest.com/docview/1680174889/?pq-origsite=primo
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recordid: proquest1680174889
title: Conical dispersion and effective zero refractive index in photonic quasicrystals.
format: Article
creator:
  • Dong, Jian-Wen
  • Chang, Ming-Li
  • Huang, Xue-Qin
  • Hang, Zhi Hong
  • Zhong, Zhi-Chao
  • Chen, Wen-Jie
  • Huang, Zhan-Yun
  • Chan, C T
subjects:
  • Dispersions
  • Approximants
  • Photonics
  • Refractivity
  • Quasicrystals
  • Photonic Crystals
  • Constants
  • Refractive Index
  • Plasma Physics (General) (So)
  • Physics (General) (Ah)
ispartof: Physical review letters, April 24, 2015, Vol.114(16), p.163901
description: It is recognized that for a certain class of periodic photonic crystals, conical dispersion can be related to a zero-refractive index. It is not obvious whether such a notion can be extended to a noncrystalline system. We show that certain photonic quasicrystalline approximants have conical dispersions at the zone center with a triply degenerate state at the Dirac frequency, which is the necessary condition to qualify as a zero-refractive-index medium. The states in the conical dispersions are extended and have a nearly constant phase. Experimental characterizations of finite-sized samples show evidence that the photonic quasicrystals do behave as a near zero-refractive-index material around the Dirac frequency.
language: eng
source:
identifier: E-ISSN: 1079-7114
fulltext: no_fulltext
issn:
  • 10797114
  • 1079-7114
url: Link


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titleConical dispersion and effective zero refractive index in photonic quasicrystals.
creatorDong, Jian-Wen ; Chang, Ming-Li ; Huang, Xue-Qin ; Hang, Zhi Hong ; Zhong, Zhi-Chao ; Chen, Wen-Jie ; Huang, Zhan-Yun ; Chan, C T
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ispartofPhysical review letters, April 24, 2015, Vol.114(16), p.163901
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descriptionIt is recognized that for a certain class of periodic photonic crystals, conical dispersion can be related to a zero-refractive index. It is not obvious whether such a notion can be extended to a noncrystalline system. We show that certain photonic quasicrystalline approximants have conical dispersions at the zone center with a triply degenerate state at the Dirac frequency, which is the necessary condition to qualify as a zero-refractive-index medium. The states in the conical dispersions are extended and have a nearly constant phase. Experimental characterizations of finite-sized samples show evidence that the photonic quasicrystals do behave as a near zero-refractive-index material around the Dirac frequency.
subjectDispersions ; Approximants ; Photonics ; Refractivity ; Quasicrystals ; Photonic Crystals ; Constants ; Refractive Index ; Plasma Physics (General) (So) ; Physics (General) (Ah);
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