thin-film helicoidal bianisotropic mediums (TFHBMs)
are rotationally nonhomogeneous nano-engineered materials
of recent vintage. Here,
optical signatures of axially excited TFHBM slabs
are calculated after solving a boundary value problem,
after assuming the chosen
materials to have single-resonance Lorentzian dielectric response properties.
The spectrum of co- and cross-polarized reflectances
and transmittances, true and apparent circular dichroisms, true
and apparent linear dichroisms, ellipticity transformation,
and optical rotation are presented. The role of the structural period in the
spectral location of the circular Bragg phenomenon is
delineated, and measures to deepen that
phenomenon are discussed. The effects of
structural handedness on the spectrum are also identified.