“E”字孔的夫琅禾费衍射场

Fraunhofer Diffraction Field of “E” Hole

为了研究"E"字孔的夫琅禾费衍射场,首先根据惠更斯菲涅耳原理推导出像面上的振幅分布公式及像面上的光强分布公式,然后果利用计算机模拟出"E"字孔在像面上的衍射图样,结果表明,用此方法可以验证衍射理论和拓展衍射的概念,同时也为计算机模拟实验提供一定参考。

In order to study the Fraunhofer diffraction field of ＂E＂ hole, the formula of the amplitude distribution on the image plane and the formula of the intensity distribution on the image plane are derived according to the Huygens Fresnel principle first. Then, the diffraction pattern of the ＂E＂ hole on the image plane is simulated by computer. Research results show that this method can be used to verify the theory of diffraction and the concept of extended diffraction. At the same time, it provides some reference for computer simulation experiment.