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arXiv · 1312.2157

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

Akhlesh Lakhtakia
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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. Physical vapor deposition techniques appear to be suitable to fabricate hyperbolic SCMs.

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Akhlesh Lakhtakia. 2013-12-08. Exhibition of circular Bragg phenomenon by hyperbolic, dielectric, structurally chiral materials. https://doi.org/10.1117/1.jnp.8.083998

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