夫琅禾费衍射的光谱特性

Spectral Characteristics of Fraunhofer Diffraction

基于MATLAB语言,以夫琅禾费衍射为研究对象,数值模拟了夫琅禾费圆孔衍射和单缝衍射光谱特性,通过改变狭缝宽度和入射波的波长,数值模拟得到夫琅禾费单缝衍射的光强变化图和光谱特性图。结果表明,圆孔衍射的光强比单缝衍射的光强曲线在次级明纹的强度更加低,夫琅禾费衍射的结论与实际理论和试验吻合的较好。研究结果为夫琅禾费衍射的研究提供参考。

Based on MATLAB language,with Fraunhofer diffraction as the research object,spectral characteristics of round hole diffraction and single slit diffraction were numerically simulated,and the variation graph of light intensity and spectral characteristics graph of Fraunhofer single slot diffraction were numerically simulated through changing of slit width and the incident wave wavelength.This result provided that light intensity of round hole diffraction was more lower than light intensity graph of single slot diffraction in subprime grain,and the results of Fraunhofer diffraction and confirming the theory and experiment had the good experimental data.The results provide the theoretic reference for research on Fraunhofer diffraction.