Polarization-universal bandgaps realized with columnar thin films

Ricardo A. Fiallo, Akhlesh Lakhtakia, Mark W. Horn

Research output: Contribution to journalArticlepeer-review


Equichiral sculptured thin films (ECSTFs) with unit cells comprising a sequence of four identical columnar thin films were fabricated using asymmetric serial bideposition to exhibit the polarization-universal Bragg phenomenon. Oblique-Angle optical transmission measurements of the ECSTFs showed bands of total transmittance values under 20%, regardless of the polarization state of the incident plane wave. These polarization-universal bandgaps can be tuned by adjusting the angle of incidence.

Original languageEnglish (US)
Article number046004
JournalJournal of Nanophotonics
Issue number4
StatePublished - Oct 1 2022

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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