Electrically controlled optical bandgap in a structurally chiral material

J. Adrian Reyes, Akhlesh Lakhtakia

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The propagation of light along the axis of non-homogeneity of a structurally chiral medium (SCM) under the influence of a low-frequency (dc) electric field aligned along the same axis is investigated. The Pockels effect is assumed to occur, and the SCM is taken to possess locally a 4̄2m point group symmetry. The frequency-domain Maxwell curl equations are cast in a 4 × 4 matrix representation, and the Oseen transformation is invoked. The band structure is analyzed, as are also the eigenvectors as well as the transfer matrix. Finally, the reflection and transmission of a plane wave due to a SCM of finite thickness is considered. The low-frequency electric field is shown to control the bandgap.

Original languageEnglish (US)
Pages (from-to)164-173
Number of pages10
JournalOptics Communications
Volume259
Issue number1
DOIs
StatePublished - Mar 1 2006

Fingerprint

Optical band gaps
Electric fields
Point groups
Wave transmission
Crystal symmetry
Maxwell equations
Eigenvalues and eigenfunctions
Band structure
low frequencies
Energy gap
electric fields
birefringence
casts
eigenvectors
inhomogeneity
plane waves
propagation
symmetry
matrices

All Science Journal Classification (ASJC) codes

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

Cite this

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Electrically controlled optical bandgap in a structurally chiral material. / Reyes, J. Adrian; Lakhtakia, Akhlesh.

In: Optics Communications, Vol. 259, No. 1, 01.03.2006, p. 164-173.

Research output: Contribution to journalArticle

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