title: Theory of partial coherence for weakly periodic media.
abstract: The second-order theory of partial coherence for scalar and TE or TM fields is developed for weakly periodic media, and the van Cittert-Zernike theorem of classical coherence theory is generalized for such media. The coherence properties of a wave field, generated by a quasi-homogeneous source distribution at the entrance plane of a finite weakly periodic medium, are calculated both inside such a structure and in the far field. The second-order theory of partial coherence for pulse propagation through weakly periodic media is also developed.
authors.affiliation: University of Groningen, Institute for Theoretical Physics and Materials Science Centre, Nijenborgh 4, NL-9747 AG Groningen, The Netherlands. b.j.hoenders@rug.nl
authors.forename: Bernhard J
authors.initials: BJ
authors.lastname: Hoenders
authors.forename: Mario
authors.initials: M
authors.lastname: Bertolotti