Exhibition of circular Bragg phenomenon by hyperbolic, dielectric, structurally chiral materials

Research output: Contribution to journalArticle

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Abstract

The relative permittivity dyadic of a dielectric structurally chiral material (SCM) varies helicoidally along a fixed direction; in consequence, the SCM exhibits the circular Bragg phenomenon, which is the circular-polarization- selective reflection of light. The introduction of hyperbolicity in an SCM-by making either one or two but not all three eigenvalues of the relative permittivity dyadic acquire negative real parts-does not eliminate the circular Bragg phenomenon, but significantly alters the regime for its exhibition. Significantly wider circularpolarization-sensitive stopbands may be exhibited by hyperbolic SCMs in comparison to nonhyperbolic SCMs. Physical vapor deposition techniques appear to be suitable to fabricate hyperbolic SCMs.

Original languageEnglish (US)
Article number083998
JournalJournal of Nanophotonics
Volume8
Issue number1
DOIs
StatePublished - Jan 1 2014

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dyadics
permittivity
Permittivity
circular polarization
Circular polarization
eigenvalues
Physical vapor deposition
vapor deposition

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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abstract = "The relative permittivity dyadic of a dielectric structurally chiral material (SCM) varies helicoidally along a fixed direction; in consequence, the SCM exhibits the circular Bragg phenomenon, which is the circular-polarization- selective reflection of light. The introduction of hyperbolicity in an SCM-by making either one or two but not all three eigenvalues of the relative permittivity dyadic acquire negative real parts-does not eliminate the circular Bragg phenomenon, but significantly alters the regime for its exhibition. Significantly wider circularpolarization-sensitive stopbands may be exhibited by hyperbolic SCMs in comparison to nonhyperbolic SCMs. Physical vapor deposition techniques appear to be suitable to fabricate hyperbolic SCMs.",
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Exhibition of circular Bragg phenomenon by hyperbolic, dielectric, structurally chiral materials. / Lakhtakia, Akhlesh.

In: Journal of Nanophotonics, Vol. 8, No. 1, 083998, 01.01.2014.

Research output: Contribution to journalArticle

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