Stepwise Chirping of Chiral Sculptured Thin Films for Bragg Bandwidth Enhancement
arXiv:2009.01327 · doi:10.1002/1098-2760(20010305)28:5<323::AID-MOP1030>3.0.CO;2-H
Abstract
A stepwise chirping of the periodicity of a chiral sculptured thin film is shown to considerably enhance the bandwidth of the Bragg regime, thereby extending the frequency range of operation as a circular{polarization filter.