Gaussian and Bessel Beam Diffraction

These figures were generated by this code. The code for the Bessel and Gaussian beams is also presented.

The wavelength in these plots is 0.5 microns. Spatial units are mm. The first plot shows a Bessel beam in blue and a Gaussian of the same width as the Bessel central peak in red. This plot is in the input plane.

This is 0.5 meters propagated the Gaussian is multiplied by 10.

This is 1 meters propagated the Gaussian is multiplied by 10.

This is 1.5 meters propagated the Gaussian is multiplied by 100.