Theory of electrically controlled exhibition of circular Bragg phenomenon by an obliquely excited structurally chiral material - Part 1

Axial dc electric field

Akhlesh Lakhtakia, Juan Adrian Reyes

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

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 (i.e., parallel to the axis of non-homogeneity of the SCM). 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.

Original languageEnglish (US)
Pages (from-to)253-268
Number of pages16
JournalOptik
Volume119
Issue number6
DOIs
StatePublished - May 1 2008

Fingerprint

slabs
Electric fields
electric fields
electric potential
circular polarization
boundary value problems
rejection
electro-optics
manipulators
inhomogeneity
plane waves
differential equations
optics
Point groups
filters
Circular polarization
augmentation
Wave transmission
Crystal symmetry
Electric potential

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

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AB - 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 (i.e., parallel to the axis of non-homogeneity of the SCM). 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.

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