A useful, analytical result for the on-axis field strength from a uniformly illuminated circular aperture is derived. Also, new calculations for circular apertures with tapered illuminations are presented.
© 1987 Optical Society of America
R. Edward English, Jr. and Nicholas George, "Diffraction from a circular aperture: on-axis field strength," Appl. Opt. 26, 2360-2363 (1987)