A simple reformulation of the double-scatter Kirchhoff approximation is presented to extend the use of this calculation method to infinitely sloped surfaces. Examples are presented for square grooves and lines on perfectly conducting surfaces. The results presented show the accuracy of the method and the errors produced by not including higher-order scattering in the calculations.
© 2003 Optical Society of America
Neil C. Bruce, "Scattering from Infinitely Sloped Surfaces by Use of the Kirchhoff Approximation," Appl. Opt. 42, 2398-2406 (2003)