二维小孔的对称变换与夫琅禾费衍射光强分布  

Symmetrical transformation for two-dimensional apertures and intensity distribution of the Fraunhofer diffraction

作　　者：戴又善[1] 

机构地区：[1]浙江大学城市学院,浙江杭州310015

出　　处：《大学物理》2011年第11期22-27,共6页College Physics

摘　　要：采用光波的复振幅叠加方法讨论了二维小孔夫琅禾费衍射的对称变换特性.通过小孔的对称变换,可以简便求得各种典型小孔的夫琅禾费衍射光强分布公式,进而利用Mathematica软件,对光强分布进行亮度模拟,得到了相应小孔的计算机衍射模拟图像.The symmetrical transformation of the Fraunhofer diffraction for two-dimensional aperture is discussed by using superposition of the complex amplitude. For apertures with certain shape, symmetrical transformation of the Fraunhofer diffraction amplitude is introduced to derive the intensity distributions of diffraction from known results. The intensity distributions of diffraction patterns are also simulated by using Mathematica soft.

关 键 词：夫琅禾费衍射 对称变换 光强分布 

分 类 号：O436.1[机械工程—光学工程]