Skip to main content

Multiple Bragg regimes exhibited by a chiral sculptured thin film half-space on axial excitation

Buy Article:

$28.45 plus tax (Refund Policy)

Abstract:

Axially excited chiral sculptured thin films (STFs) are shown to display the circular Bragg phenomenon in more than one wavelength-regime, owing to the dispersion inherent in their dielectric susceptibilities. With the assumption of the one-resonance Lorentz model for the constitutive parameters in a frequency-domain investigation, two Bragg regimes emerge: one pre-resonant, and the other post-resonant. A wavelength-regime of perfect reflection also appears. The pulse-bleeding mechanism previously shown to underlie the pre-resonant Bragg regime turns out to be responsible also for the post-resonant Bragg regime. Femtosecond pulse propagation in the post-resonant regime would be very likely affected by the existence of multiple Bragg and perfectly reflecting regimes.

Keywords: Bragg regime; Lorentz model; chiral thin film; circular Bragg phenomenon; femtosecond pulse; pulse propagation; sculptured thin film

Document Type: Original Article

DOI: https://doi.org/10.1078/0030-4026-00153

Affiliations: 1: CATMAS – Computational and Theoretical Materials Sciences Group, Department of Engineering Science and Mechanics, 212 Earth-Engineering Sciences Building, Pennsylvania State University, University Park, PA 16802-6812, USA 2: Applied Science and Technology Graduate Group, University of California, Berkeley, CA 97420, USA

Publication date: 2002-08-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more