摘 要:大学物理教程中关于衍射光强分布的内容,一般采用菲涅尔半波带法定性讨论;本论文采用了一种简单的方法,用傅里叶变换式计算光的单缝、圆孔衍射的光强分布,根据计算结果并用MATLAB软件仿真模拟单缝、圆孔衍射及其光强分布,分析计算结果和模拟结果得出衍射图样取决于缝宽或孔径的尺寸大小。这种理论将衍射装置看成傅里叶分析器,这为光学提供了一种强有力的数学手段——傅里叶分析,同时也将抽象的数学运算变成了现实存在的物理实验过程。8920
关键词:傅里叶变换;衍射;光强分布
The Calculation of Light Intensity Distribution of Diffraction by Fourier Transformation
Abstract: On the light intensity distribution of diffraction, the university physics course usually use the discussion of Final zone plate statutory; this paper presents a simple method, the calculation of light intensity distribution of Single slit and circular aperture diffraction by the Fourier transform calculation, the simulation using MATLAB software according to the results to the single slit and circular aperture diffraction and light intensity distribution, the analytical calculation and simulation results to know the diffraction pattern depends on slit width or aperture size. The theory looks diffraction device as Fu Fiye analyser, which provides a powerful mathematical tool - Fu Liye analysis for optical, also develops math abstract theory into physics experiment course which exists in reality.
Key Words: Fourier transform; Diffraction; Intensity distribution
目 录