Chiral sculptured thin films as circular Bragg supermirrors

Tom G. MacKay, Akhlesh Lakhtakia

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The planewave re ection/transmission characteristics of a chiral sculptured thin film (CSTF) were investigated numerically. The helical nanowires of the CSTF were taken to be made from a dissipative material while the void regions between the nanowires were filled with an active material. Theory showed that the CSTF can simultaneously amplify left-circularly-polarized incident light and attenuate right-circularly-polarized incident light, or vice versa depending upon the handedness of the CSTF. The presence of both dissipative and active materials allows the high reflectance to exceed unity for incident light of one circular polarization state across a substantial portion of the circular Bragg spectral regime but not for incident light of the other circular polarization state. That is, the chosen CSTF is a circular Bragg supermirror for one, and only one, circular polarization state.

Original languageEnglish (US)
Title of host publicationNanostructured Thin Films XI
EditorsTom G. Mackay, Akhlesh Lakhtakia
ISBN (Electronic)9781510620339
StatePublished - Jan 1 2018
EventNanostructured Thin Films XI 2018 - San Diego, United States
Duration: Aug 22 2018Aug 23 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherNanostructured Thin Films XI 2018
Country/TerritoryUnited States
CitySan Diego

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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