双缝干涉条纹特征分析  

Analysis of Young's Double-slit Interference

作　　者：王东[1] 莫绪涛[1] 

机构地区：[1]安徽工业大学数理学院,安徽马鞍山243002

出　　处：《安徽工业大学学报（自然科学版）》2012年第2期154-156,共3页Journal of Anhui University of Technology（Natural Science）

摘　　要：在杨氏干涉的常规分析中,为了简化推导过程,对光程差作了近似分析,得到干涉条纹等间距分布的结论,实验中往往出现不等间距的情况。应用编程精确计算干涉的光程差,通过调整双缝间距,得到了条纹间距逐渐变大的干涉图样。同时给出了在没有作任何近似条件下不同级次条纹位置的表达式,并得出干涉条纹不仅间距逐渐增大而且数目有限的结论。The optical path differences for Young＇s interference are approximated to simplify the derivation process and the conclusion is that the interference fringes are equally spaced.In fact,unequally spaced fringes are often watched.In order to analyze this fact,the accurate optical path differences are calculated by matlab programming.By adjusting the distance between two splits,an interference pattern with progressively larger fringe spacing is observed.In the absence of any approximation,the location expressions of the interference fringes are obtained,and the conclusion is that the interference fringes are not only gradually larger but limited in number.

关 键 词：杨氏干涉 双缝 条纹间距 MATLAB 

分 类 号：O436.1[机械工程—光学工程]