The gain–length product for two-wave mixing in photorefractive BaTiO_3 is calculated as a
function of the angles between a pump beam and a scattered beam and the crystal c axis …

In holographic experiments many photorefractive crystals show refractive-index changes
much smaller than one would expect from the known electro-optic coefficients and space …

We present a theory of the influence of photoelasticity and optical activity on the two-beam
coupling in cubic photorefractive crystals rotated around the [110] axis. The two beam …

Photorefractive two-beam-coupling coefficients are measured and compared in thin and
thick cerium-doped strontium barium niobate crystals fabricated from the same boule. For …

A model of the photorefractive effect is presented that includes a shallow-trap level (hole or
electron trap) as well as a species of deep traps with electron and hole excitation. It is shown …

In certain crystals, photorefractive two-beam coupling is predicted for orthogonally polarized
optical beams. The prediction follows from the phenomenological tensor form of the …

A well-defined ring of anisotropically scattered light is observed when a linearly polarized
laser beam is incident upon a birefringent photorefractive crystal such as BaTiO_3 …

In general, the application of an electric field to a photorefractive material with optical activity
results in a change in the effective electro-optic coefficient, r eff, which, in turn, alters the …

A complementary photorefractive grating was created and stored in BaTiO_3. For a grating
wave vector oriented along the crystal's c axis, the grating first appeared above 80° C and …

We demonstrate a new type of scattering process induced by two mutually incoherent
beams in photorefractive crystals. The input beams may be of different colors. Dark and …