Focal shifts in diffracted converging spherical waves
Focal shifts in diffracted converging spherical waves
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DOI：
10.1016/0030-4018(82)90059-1
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发表时间：
1982-04
影响因子：
2.4
通讯作者：
M. P. Givens
中科院分区：
文献类型：
--
作者：
M. P. Givens
众所周知，当会聚的单色球面波在圆孔处衍射时，最大强度的点可能不在入射波的几何焦点处，但可能位于更靠近孔径的位置。在本说明中，这种影响是使用比以前的出版物中使用的更简单的数学程序来计算的。结果被解释为衍射和平方反比定律的综合效应。
It is known that when a converging, monochromatic, spherical wave is diffracted at a circular aperture, the point of maximum intensity may not be at the geometric focus of the incident wave, but may be located closer to the aperture. In the present note this effect is calculated using somewhat simpler mathematical procedures than have been used in previous publications. The result is interpreted as the combined effect of diffraction and the inverse square law.