## Abstract The Bragg wavelength regime of an axially excited, chiral sculptured thin film is shown to contain resonances of electric, magnetic, and mixed types. The resonance wavelengths initially change rapidly, but later stabilize, with respect to the film thickness. The center wavelength of the
Pseudo-isotropic and maximum-bandwidth points for axially excited chiral sculptured thin films
✍ Scribed by Akhlesh Lakhtakia
- Book ID
- 102517174
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 253 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
Chiral sculptured thin films (STFs) are periodically anisotropic, and exhibit the circular Bragg phenomenon over a certain wavelength regime on axial excitation. Among the key deposition parameters for the growth of a chiral STF is the so‐called vapor incidence angle χ~v~. Analysis based on data on the related columnar thin films (CTFs) shows that pseudo‐isotropic values of χ~v~ can exist. Similarly, a maximum‐bandwidth value of χ~v~ is also shown to be possible. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 34: 367–371, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10464
📜 SIMILAR VOLUMES
A stepwise chirping of the periodicity of a chiral sculptured film is shown to considerably enhance the bandwidth of the Bragg regime, thereby extending the frequency range of operation as a circularpolarization filter.