菲涅耳衍射光场分布的数值计算与数字重构

Numerical Computation and Numerical Reconstruction of Optical Fields Distributing for Fresnel Diffraction

本文研究了光场分布的数值计算与数字重构方法。从光的菲涅耳衍射、波前相位重构入手,对连续信号进行了离散化处理,给出了数值计算公式.对光波通过矩形孔径、圆形孔径传播后的光场分布和干涉全息图的波前重构进行了数值计算.仿真结果表明数值计算更加直观地展现了光的特性,并提供可视化的验证.

Numerical computation and numerical reconstruction of optical fields distribution are investigated in this paper. The formula of numerical computing is presented with discretion for Fresnel diffraction and phase numerical reconstruction of wave front. For example, light propagation through an aperture and numerical reconstruction of digitally stored holograms. The result shows that it exhibits obviously optical character with numerical computing, which provides visual validation for optics.