A variational theory is presented that describes the diffraction properties of perfectly conducting gratings in TE polarization. By using this formalism we solve the problem of the energy distribution of light diffracted by gratings with periodic errors.
© 1982 Optical Society of America
M. Breidne and D. Maystre, "Variational theory of diffraction gratings and its application to the study of ghosts," J. Opt. Soc. Am. 72, 499-506 (1982)