通过详细计算给出用超短光脉冲作相干光源的偏振光干涉仪中Ｗｏｌｌａｓｔｏｎ棱镜的设计参数，并仔细分析了棱镜在光路中处于不同位置时对干涉仪性能的影响。 Through the detailed calculation, the design parameters of the Wollaston prism in the polarization interferometer with the ultra-short optical pulse as the coherent light source are given. The influence of the prism on the performance of the interferometer when the prism is in different positions in the optical path is carefully analyzed.