The coupling of two waves in barium titanate is described in terms of scattering matrices
derived from a vector coupled wave theory. Key mechanisms responsible for the processes …

Phase conjugation is the general term for a process which produces an optical wave that
propagates in the opposite sense of an incident wave. In self-pumped phase conjugation …

Two new types of parametric scattering of light in photorefractive BaTiO, crystals are
investigated. Nonlinear scattering requires two orthogonally polarized pump beams. It is …

Asymmetric and centrosymmetric scattering are investigated in barium titanate. The
dependence of scattered intensity on beam diameter is experimentally derived and shown to …

We study the mechanism by which parametric scattering couples orthogonally polarized
light waves in photorefractive BaTi03. We obtain explicit relationships that link the efficiency …

When a beam of extraordinarily polarized light is directed through a poled, single crystal of
BaTiO^ it fans in the direction of the optic axis. This thesis research investigates the origin of …

The influence of the piezoelectric and photoelastic effects is experimentally demonstrated in
barium titanate (BaTiO 3). Its effect on the photorefractive two-beam coupling is investigated …

We propose a new theoretical model for the light-induced migration of charges which
mediates the “photorefractive effect”(light-induced refractive index change) in barium titanate …

Steady emission of a phase conjugated beam from a photorefractive BaTiO 3 crystal is
generally obtained via a self-pumping process when the four-wave mixing configuration …

We have earlier described a detailed mechanism of self-pumped phase conjugation in a
barium titanate crystal [1]. The proposed mechanism was motivated and supported by …