We investigated the features of the optical properties of magnetoactive cholesteric liquid crystals (CLCs) in an external static magnetic field. The boundary-value problem of light transmission through a finite layer of a magnetoactive CLC at normal light incidence and light reflection from a half-space is considered. We also investigated the evolution of the reflection with a change in the azimuth and ellipticity of the incident light. Some features of the reflection spectra, optical rotation, and polarization ellipticity, as well as the ellipticity spectrum of the eigen polarizations, are investigated, too. The peculiarities of the ellipticity evolution of the eigen polarizations due to a change in the magneto-optical activity parameter are considered.

我们研究了外部静磁场中磁活性胆甾型液晶 (CLC) 的光学特性。考虑了在法向光入射和半空间光反射下通过磁活性 CLC 的有限层的光传输的边界值问题。我们还研究了随着入射光的方位角和椭圆度的变化反射的演变。还研究了反射光谱、旋光度和偏振椭圆率的一些特征，以及本征偏振的椭圆率谱。考虑了由于磁光活动参数的变化引起的本征极化椭圆度演化的特性。