gauss - filters the field through a Gaussian intensity filter.
The transmitted intensity is given by A*exp(-(x*x+y*y)/(R*R)): where R is the radius of the Gaussian aperture and A is the maximum transmission. This filter can be used to model gauss beams: begin followed by gauss produces a finite grid approximation of a gauss beam.
F1=begin(0.01,1e-6); F2=gauss(F1,0.004); field_plot(F2); dwf_fits(F2,"F2");
Chen jingyuan, Gan guangyong (IAPCM, Beijing,China.)
gauss_screen , hex_ap , rect_ap , annul_ap , gauss ,