Muller matrix expression and polarization analysis of refraction polarizers

Based on the theory of the Stokes vector and Muller matrix,the Muller matrix expression of a refraction polarizer is deduced.Then the Stokes vector formula and polarization formula of the transmitted light are discussed when the natural light is incident the refraction polarizer at an arbitrary angle.Finally the relation curve among the polarization degree and the refractive index and layer number of the medium is drawn when the light is incident the polarizer at Brewster angle.Results show it is easy to obtain higher polarization degree if the medium's refractive index or the number of the medium layer is increased when the natural light is incident at Brewster angle.The study results are applicable for other multilayer medium membrane device.