Diffraction of Square Aperture

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Fraunhoffer pattern
Nf = 4
Nf = 2
Nf = 1;

Fraunhoffer pattern

func = @(x,y) rect(x/2).*rect(y/2);

[out inp] = fdiffract(func,0);

subplot(1,2,2);
imshow(out);
title(sprintf('maximum value %g\n',max(max(out))));

out = fdiffract(func,0.1);
title(sprintf('maximum value %g\n',max(max(out))));

Nf = 4

out = fdiffract(func,4);

Warning: Image is too big to fit on screen; displaying at
50%

Nf = 2

out = fdiffract(func,2);

Nf = 1;

out = fdiffract(func,1);