O ct 2 00 6 Theory of electrically controlled exhibition of circular Bragg phenomenon by an obliquely excited structurally chiral material
نویسندگان
چکیده
The boundary–value problem of the reflection and transmission of a plane wave due to a slab of an electro–optic structurally chiral material (SCM) is formulated in terms of a 4×4 matrix ordinary differential 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 circular Bragg phenomenon (CBP) by the application of the dc voltage has either switching or circular–polarization–rejection applications in optics. The twin possibilities of thinner filters and electrical manipulation of the CBP, depending on the local crystallographic class as well as the constitutive parameters of the SCM, emerge.
منابع مشابه
N ov 2 00 6 Theory of electrically controlled exhibition of circular Bragg phenomenon by an obliquely excited structurally chiral material . Part 2 : arbitrary dc electric field
Abstract: Numerical examination of the solution of the boundary–value problem of the reflection and transmission of a plane wave due to a slab of an electro–optic structurally chiral material (SCM) indicates that the exhibition of the circular Bragg phenomenon by the SCM can be controlled not only by the sign and the magnitude of a dc electric field but also by its orientation in relation to ax...
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