Circular Bragg supermirror

The helical nanowires of a chiral sculptured thin film (CSTF) were taken to be made from a weakly dissipative material while the void regions between nanowires were filled with an active material, and the planewave reflection/transmission characteristics were investigated numerically. The CSTF was found to simultaneously amplify left-circularly polarized incident light and attenuate right-circularly polarized incident light, or vice versa, depending upon its structural handedness. This polarization-state-dependent attenuation and amplification phenomenon is sensitive to the direction of incidence and the thickness of the CSTF. Furthermore, the presence of both dissipative and active materials allows the high reflectance to exceed unity across a substantial proportion of the circular Bragg spectral regime for incident light of one circular polarization state but not of the other circular polarization states. That is, the CSTF functions as a circular Bragg supermirror for one, and only one, circular polarization state.

Files

Metadata

Work Title Circular Bragg supermirror
Access
Open Access
Creators
  1. Tom G. Mackay
  2. Akhlesh Lakhtakia
License In Copyright (Rights Reserved)
Work Type Article
Publisher
  1. Journal of Nanophotonics
Publication Date April 1, 2018
Publisher Identifier (DOI)
  1. https://doi.org/10.1117/1.JNP.12.026015
Deposited November 15, 2021

Versions

Analytics

Collections

This resource is currently not in any collection.

Work History

Version 1
published

  • Created
  • Added Mackay_18_3v6A.pdf
  • Added Creator Tom G. Mackay
  • Added Creator Akhlesh Lakhtakia
  • Published
  • Updated
  • Updated
  • Updated