Since diffraction is a scattering process in principle, light propagation through one aperture in a screen is discussed in the light-scattering theory. Through specific calculation, the expression of the electric field observed at an observation point is obtained and is used not only to explain why Kirchhoff’s diffraction theory is a good approximation when the screen is both opaque and sufficiently thin but also to demonstrate that the mathematical and physical problems faced by Kirchhoff’s theory are avoided in the light-scattering theory.
© 2010 Optical Society of America
Original Manuscript: August 27, 2009
Revised Manuscript: January 13, 2010
Manuscript Accepted: January 14, 2010
Published: February 23, 2010
Wei Guo, "Light-scattering theory of diffraction," J. Opt. Soc. Am. A 27, 492-494 (2010)