Fresnel-Kirchhoff diffraction in optical systems: an approximate computational algorithm
1984; Optica Publishing Group; Volume: 23; Issue: 14 Linguagem: Inglês
10.1364/ao.23.002292
ISSN0003-6935
Autores Tópico(s)Mathematical Analysis and Transform Methods
ResumoA method is outlined for approximation of scalar wave disturbances via the Fresnel-Kirchoff formula. While the method is limited to evaluating the disturbance along spherical reference surfaces, no particular inconvenience arises from this constraint in the context of many optical designs. The technique may readily be extended into the focal region. The fast Fourier transform is employed, making the computation time proportional to N logN, where N is the number of data points sampled in each wave front. Some examples are presented.
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