… We have shown that photorefractive ferroelectrics with small μτ and large dielectric … of
the photorefractive grating and of nonlinear effects connected with the excitation of space-charge …

… development of organic photorefractive materials,5–8 and … is the setup of a photoinduced
space-charge electric field. This … a measurement of the photorefractive space-charge field in a …

… In ferroelectric crystals such as LiNb03 and Sr0.75 Ba,,Nb,O, (SBN:75), … space-charge
field. This technique uses photoinduced space-charge fields alone to modulate the ferroelectric …

… 1 (a) Homogeneously poled crystal, showing the space charge at the edges of the beam.
(b) Periodically poled crystal, showing the space charge alternating with domain orientation …

… photorefractive response of a periodically poled ferroelectric on the spatial frequency of
light fringes, on the period of the domain inversion, and on its mark-to-space … as charge-transport …

… Rogue waves are observed as light propagates in the extreme nonlinear regime that occurs
when a photorefractive ferroelectric crystal is undergoing a structural phase transition. The …

… describe the photorefractive effect in lead germanate crystal (PbSGe301l)' This material
itself is not new. Its ferroelectric properties were discovered in 1971.In the ferroelectric phase it …

… on organic photorefractive materials have been reported since the photorefractivity of …
generation of a spacecharge field internal electric field due to charge separation between bright …

… ferroelectric photorefractive crystals with two donor levels under steady illumination by laser
beam. The transverse instability of the interacting light beams plays an important role and …

… and photorefractive performance. In the following three sections we discuss the ferroelectrics…
, up to 10" cm", which means that the limiting value of the space charge field, E, is also large …