B. Sturman et al., MECHANISM OF SELF-ORGANIZED LIGHT-INDUCED SCATTERING IN PERIODICALLY POLED LITHIUM-NIOBATE, Applied physics letters, 69(10), 1996, pp. 1349-1351
It is shown that the photorefractive grating produced by a pair of pla
ne waves in periodically poled lithium niobate includes an additional
set of spatial harmonics related to the periodic domain structure. Thi
s results in new schemes for photorefractive wave coupling. Using the
modified phase matching conditions and the concept of optical oscillat
ion we accurately describe the position of the diffraction peaks and e
xplain the main characteristics of self-organized photoinduced scatter
ing reported recently. (C) 1996 American Institute of Physics.