Electrically controlled optical bandgap in a structurally chiral material

J. Adrian Reyes, Akhlesh Lakhtakia

Research output: Contribution to journalArticlepeer-review

34 Scopus citations


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
Issue number1
StatePublished - Mar 1 2006

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


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