J. A. Aust, B. Steiner, N. A. Sanford, G. Fogarty, B. Yang, A. Roshko, J. Amin, and C. Evans, "Examination of domain-reversed layers in Z-cut LiNbO3 using maker fringe analysis, atomic force microscopy, and high-resolution X-ray diffraction imaging,"
in Conference on Lasers and Electro-Optics, D. Killinger, G. Valley, C. Chang-Hasnain, and W. Knox, eds.,
Vol. 11 of OSA Technical Digest
(Optical Society of America, 1997), paper CFG1.