折射式起偏器的密勒矩阵表示及偏振度分析

为了研究折射式起偏器的密勒矩阵表达式,以矩阵光学中关于斯托克斯矢量和密勒矩阵的有关理论为基础,通过理论运算导出了折射式起偏器的密勒矩阵的一般表达式;探讨了自然光以任意角度入射折射式起偏器的情况下透射光的斯托克斯矢量表示及偏振度所满足的公式;绘制了以布儒斯特角入射时透射光偏振度与介质折射率及介质层数的关系曲线。结果表明,在以布氏角入射折射式起偏器的前提下,增大介质的折射率和介质层数更容易获得较高的偏振度。这一研究结果对多层介质膜器件同样适用,具有一定的现实参考意义。

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.