Fresnel diffraction calculation through the fast fractional Fourier transform

被引:2
|
作者
Mas, D [1 ]
Ferreira, C [1 ]
Garcia, J [1 ]
机构
[1] Univ Valencia, Dept Interuniv Opt, E-46100 Burjassot, Valencia, Spain
来源
OPTICS IN COMPUTING 98 | 1998年 / 3490卷
关键词
discrete Fourier transform; fractional Fourier transform; Fresnel diffraction pattern; Fresnel integral;
D O I
10.1117/12.308852
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
A new method for the calculation of the Fresnel diffraction patterns through a fast fractional Fourier transform (FRT) is presented. The FRT can be efficiently calculated for any order by using the fast-Fourier transform algorithm. The resemblances between the FRT and the Fresnel integrals allow the use of that algorithm to calculate eficiently the Fresnel integral of any object, with independence of its shape.
引用
收藏
页码:461 / 464
页数:4
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