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

Akhlesh Lakhtakia

doi:10.1117/1.JNP.8.083998

27 February 2014 Exhibition of circular Bragg phenomenon by hyperbolic, dielectric, structurally chiral materials

Akhlesh Lakhtakia

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Journal of Nanophotonics, Vol. 8, Issue 1, 083998 (February 2014). https://doi.org/10.1117/1.JNP.8.083998

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.

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Akhlesh Lakhtakia "Exhibition of circular Bragg phenomenon by hyperbolic, dielectric, structurally chiral materials," Journal of Nanophotonics 8(1), 083998 (27 February 2014). https://doi.org/10.1117/1.JNP.8.083998

Published: 27 February 2014

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