自制教具演示光的偏振方向

Self-made teaching AIDS for demonstrate polarization of light

在传统教学演示实验中,使用起偏器和检偏器演示光的偏振现象只能获得2个偏振片的相对偏振方向.当偏振方向平行时,透射光的强度最大;偏振方向垂直时,透射光的强度最小.借鉴矢量偏振光的性质,自制了径向偏振片代替起偏器,根据透射光的强度分布可以直接观察到光的偏振方向.

In the traditional teaching demonstration experiment,only the relative polarization directions of two polarizers can be obtained by demonstrating the polarization phenomenon of light.When the polarization direction is parallel to that of the polarizer,the intensity of transmitted light is maximum.While the polarization direction is vertical,the transimission intensity is minimum.In this paper,based on the properties of vector polarized light,a radial polarizer was made instead,which could directly observe the polarization direction of light according to the intensity distribution of transmitted light.