Electro-optical properties of cholesteric with tangential-conical anchoring at oblique light incidence

The effects of the incidence angle and applied voltage on the polarization state of light passing through a cholesteric (CLC) with tangential-conical boundary conditions are investigated. Both cases in which the CLC director on the input substrate is perpendicular or parallel to the light incidence plane are considered. <i>The polarization azimuth following mode</i> is characterized as a function of the incidence angle and voltage. <i>The wavelength-independent mode of change in light polarization</i> has been discovered. The influence of the helix pitch and CLC layer thickness on <i>the realized modes</i> parameters is in good agreement with theoretical predictions based on the Frank-Oseen approach.