不同三角形孔和矩形孔构成的双孔Fraunhofer衍射图样模拟  

Simulation of Fraunhofer Diffraction Pattern Through Double Holes Made of Rectangular Hole and Triangular Hole

作　　者：杨坤[1] 成泰民[1] 

机构地区：[1]沈阳化工大学数理系,辽宁省沈阳市110142

出　　处：《曲阜师范大学学报（自然科学版）》2012年第2期64-68,共5页Journal of Qufu Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(10647138);辽宁省教育厅科学研究项目(20060667)

摘　　要：利用基尔霍夫衍射理论,推导出不同三角形孔和矩形孔构成的不同形状双孔Fraunhofer(夫琅禾费)衍射在屏幕上的相对衍射强度的分布公式,并利用mathematica软件模拟了不同三角形孔和矩形孔构成的不同形状双孔Fraunhofer衍射图样和强度分布,从而找出了不同三角形孔和矩形孔的相对位置变化、矩形孔大小变化、三角形孔大小形状变化与Fraunhofer衍射图样之间的内在规律.This article discusses specifically single slit Fraunhofer diffraction in light diffraction.Generally,in Fraunhofer diffraction,with the changing of the hole＇s shape,the diffraction facula will change radically.Thus,there are many articles discuss Fraunhofer diffraction based on different shape of the hole.whereas,in this paper,using the Kirchoff diffraction theory,the relative diffraction intensity formulas of Fraunhofer diffraction through two different shaped holes（rectangular and triangular） have been derived,and it simulated the pattern and the intensity distribution using Mathematica.Throughout the simulation,it summarized the inherent law between the Fraunhofer diffraction pattern,the relative position change of two holes,and the size change of the two holes.

关 键 词：基尔霍夫理论 矩形孔 三角形孔 FRAUNHOFER衍射图样 相对衍射强度 

分 类 号：O436.1[机械工程—光学工程]