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.

© 2005 Optical Society of America

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