基于矢量光场的衍射分析与数值仿真

Analysis and Numerical Simulation of Diffraction Based on Vectorial Light Field

以光波的矢量性振动为基础,对偏振光衍射的光振动进行了矢量分析,结合菲涅尔-基尔霍夫衍射公式,获得了适用于计算机数值计算的理论公式,然后,通过计算获得了经典衍射屏在傍轴条件和非傍轴条件下的衍射图样,此外,得到了任意形状和任意透光度的若干衍射屏的衍射图样,为更好地理解光的衍射提供一定的参考.

Based on the vector of the light field and Fresnel-Kirchhoff diffraction formula,we analysed the vibration state of the diffraction,and obtained the theoretical formula for calculation.The patterns of some classical diffraction screens were simulated by the numerical method in paraxial and non-paraxial region.In addition,the diffraction patterns of arbitrary shape and arbitrary transmission coefficient are also simulated in the same region.This work can provide some ideas for better understanding the diffraction of light.