Blue-shifting of circular Bragg phenomenon by annealing of chiral sculptured thin films

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Abstract

The wavelength regime of the circular Bragg phenomenon, exhibited by chiral sculptured thin films fabricated using the serial bideposition technique, blue shifts as a result of post-deposition annealing. This blue shift can be attributed to the net effect of three material changes that occur during annealing: A small reduction in helical pitch, an increase in the relative permittivity of the column material changing from amorphous to crystalline, and a density reduction due to columnar thinning from the same amorphous-to- crystalline transition.

Original languageEnglish (US)
Pages (from-to)8001-8012
Number of pages12
JournalOptics Express
Volume14
Issue number17
DOIs
StatePublished - 2006

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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