30 August 2006 Bragging electrically
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The incorporation of the Pockels effect in structurally chiral materials (SCMs) engenders new modalities for control manipulation of the circular Bragg phenomenon (CBP). The boundary-value problem of the reflection and transmission of a plane wave due to a slab of an electro-optic SCM is formulated in terms of a 4×4 matrix ordinary dfferential equation. The SCM slab can be locally endowed with one of 20 classes of point group symmetry, and is subjected to a dc voltage across its thickness. The enhancement (and, in some cases, the production) of the CBP by the application of a dc electric field across the thickness of the SCM slab has switching and circular-polarization-rejection applications in optics.
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Akhlesh Lakhtakia, "Bragging electrically", Proc. SPIE 6320, Complex Photonic Media, 63200L (30 August 2006); doi: 10.1117/12.680322; https://doi.org/10.1117/12.680322

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