On the magnetooptics of cholesteric liquid crystals

In this paper we theoretically studied the features of the optical properties of cholesteric liquid crystals (CLC) in an external static magnetic field, taking into account the magneto-optical activity. The boundary value problems of reflection from a half-space of a planar CLC and the transmission of light through a finite layer of a magnetoactive CLC at normal incidence of light is considered. The features of the evolution of reflection spectra from a half-space with a change in the parameter of magneto-optical activity are investigated. The existence of the effect of magnetically induced transparency (MIT) in CLCs with real (non-exotic) parameters is shown. The features of the MIT resonance lines at different values of the local optical anisotropy of the CLC are discussed.