以柱面波作为基元证明单缝夫琅禾费衍射公式  

Using cylindrical wave to prove the single slit Fraunhofer diffraction formula

作　　者：马瑞琼[1] 时坚[1] 段作梁[1] 姜麟建 

机构地区：[1]西安邮电大学电子工程学院,陕西西安710121

出　　处：《大学物理》2014年第3期18-21,共4页College Physics

基　　金：陕西省自然科学基金资助项目(2012JQ8014);陕西省教育厅自然科学基金资助项目(12JK0978);西安邮电大学校青年基金资助项目(1010471)

摘　　要：通过对电信号处理和光信息处理的类比分析,提出了用柱面波作为基元信号处理光场信息的方法,写出了复杂光波信号用柱面波基元信号的展开表达式并给出权重因子的物理含义.结果表明,柱面波作基元信号与球面波、平面波作基元信号所得单缝夫琅禾费衍射公式相同.By analogy analysis of signal processing and optical information processing, we present a method that the cylindrical wave can be used as a basic element signal to expand light field information. The formula,which optical signal is expanded by the cylindrical wave, is given and the physical meanings of the weight factor are revealed. It is shown that the same result in the far field is obtained by using the cylindrical wave, spherical wave and plane wave as basic element signals.

关 键 词：单缝衍射 基元信号 柱面波 

分 类 号：O436.1[机械工程—光学工程]