Based on the beam coherence-polarization matrix and Collins formula, the on-axis polarization property of Gaussian-Schell model beam diffracted through an aperture was studied numerically.

• 摘要为了对控制光束传播的质量提供理论依据，采用光束相干-偏振矩阵理论中柯林斯公式，对高斯谢尔模型光束经光阑衍射后的轴向偏振特性进行了理论研究和数值分析。