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Journal of Nanophotonics • Open Access

Exhibition of circular Bragg phenomenon by hyperbolic, dielectric, structurally chiral materials
Author(s): Akhlesh Lakhtakia

Paper 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 circular-polarization-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.

Paper Details

Date Published: 27 February 2014
PDF: 10 pages
J. Nanophoton. 8(1) 083998 doi: 10.1117/1.JNP.8.083998
Published in: Journal of Nanophotonics Volume 8, Issue 1
Show Author Affiliations
Akhlesh Lakhtakia, The Pennsylvania State Univ. (United States)

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