矩形孔的菲涅尔衍射和夫琅禾费衍射仿真研究  

Fresnel Diffraction and Fraunhofer Diffraction Simulation of Rectangular Apertures

作　　者：鞠丽平 罗宏超 杨迪 杨旭 Ju Liping;Luo Hongchao;Yang Di;Yang Xu(School of Science,Shenyang Aerospace University LiaoningShenyang 110136)

机构地区：[1]沈阳航空航天大学理学院,辽宁沈阳110136

出　　处：《科技风》2024年第23期148-150,共3页

基　　金：2022年辽宁省教改项目--基于跨校修读课程《现代科学运算—MATLAB语言与应用》的混合式教学模式的研究与实践。

摘　　要：在基尔霍夫衍射公式基础上推导出一般矩形孔的菲涅尔衍射和夫琅禾费衍射的光强分布,模拟出它们的衍射图样。研究表明,随着z的逐步增大,矩形孔、正方形孔及狭缝的衍射特征均从菲涅尔衍射逐步演变成夫琅禾费衍射,加深了对矩形孔衍射规律的理解,也为教学研究和实验研究提供理论支撑。Based on the Kirchhoff diffraction formula,the intensity distributions of Fresnel diffraction and Fraunhofer diffraction for general rectangular holes are derived,and then their diffraction patterns are simulated.It has been shown that the diffraction characteristics of rectangular holes,square holes,and slits gradually evolve from Fresnel diffraction to Fraunhofer diffraction with z gradually increasing.This deepens the understanding of the diffraction laws of rectangular holes and provides theoretical supports for teaching and experimental research.

关 键 词：菲涅尔衍射 夫琅禾费衍射 光强分布 

分 类 号：O43[机械工程—光学工程]