高斯光束照射下的圆盘夫琅禾费衍射  

THE FRAUNHOFER DIFFRACTION AT A CIRCULAR DISC ILLUMINATED BY A GAUSSIAN BEAM

作　　者：让庆澜[1] 

机构地区：[1]北京大学物理系

出　　处：《大学物理》1997年第11期5-9,23,共6页College Physics

摘　　要：推导了高斯光束照射圆孔或圆盘的衍射场普遍表达式；计算了半波带数接近于零的情况下上述衍射场的数据；进而分析了圆盘衍射场在艾里斑中增加一个暗环的原因．The general expression of the diffraction field at a circular aperture (or disc) illuminated by a Gaussian beam is derived. A systematic set of data of the above diffraction field for some particular conditions with a near-zero number of half-period zones is calculated. The phenomenon of a dark ring in the Airy disc for the diffraction field at an opaque strip (or a disc) is explained.

关 键 词：圆盘衍射 高斯光束 菲涅耳半波带 衍射光学 

分 类 号：O436.1[机械工程—光学工程]