基于白光干涉与衍射实验的仿真研究

根据惠更斯一菲涅耳原理,应用MATLAB软件编程,模拟了白光通过单缝、双缝、多缝、光栅以及圆孔的干涉或衍射的光强分布图形,通过改变缝宽、缝间距、光强以及圆孔的大小,观察到干涉衍射条纹的相应变化,这与光学理论相符合.这种方法作为辅助教学手段,使抽象而复杂的物理现象变得直观、简单,有助于学生的理解,尤其是对于教学具有非常直观的作用.

Simulation study of interference and diffraction experiments based on white light

According to the principle of Huygens-Fresnel, we simulate the interference and diffraction, which white light＇s pattern and intensity distribution of single slit, dual-slit, multiple-slit, grating and circular aperture curve by using MATLAB program. The interference and diffraction fringes will change by adjusting the parameter of slit width, distance of slits, intensity of incident light, and size of circular aperture, etc. This agrees with optical theory. This kind of computer simulation method extends the study ways of the diffraction problem, and has some potential application value, especially for teaching of visual effect.