Sculptured thin films as ultranarrow-bandpass circular-polarization filters

Akhlesh Lakhtakia, Martin McCall

Research output: Contribution to journalArticlepeer-review

64 Scopus citations


In the Bragg wavelength-regime, a sculptured thin film with chiral micromorphology permits light of a particular circular polarization state to pass virtually unhindered, but light of the other polarization state is reflected almost completely. This circular Bragg phenomenon is shown here to admit narrow-band spectral reflection holes analogous to those well-studied as phase defects within grating structures. Application to the design of an ultranarrow-bandpass circular-polarization filter is considered, with the location, bandwidth and polarization selectivity quantified via a particular set of numerical examples.

Original languageEnglish (US)
Pages (from-to)457-465
Number of pages9
JournalOptics Communications
Issue number5
StatePublished - Sep 15 1999

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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