We describe a pulse readout technique for high gain and a high signal-to-noise ratio (SNR)
in signal beam amplification by two-beam coupling in a photorefractive BaTiO_3 crystal. The …

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 …

Absorption, light-induced absorption changes, photo and dark conductivities, bulk
photovoltaic currents and two-beam coupling gain coefficients are measured for oxidized, as …

We present two-beam coupling experiments in the nanosecond regime at 1.06?? µm, using
photorefractive BaTiO_3: Rh.? The maximum observed exponential gain coefficient is 14.2 …

We present original data on experiments with cubic photorefractive crystal Bi12TiO20 under
an external dc electric field in the configuration of Z-scan characterization technique. In …

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 this work the influence of the vacancies concentration in pure BaTiO3 single crystals is
studied. It is shown that the oxidation and the reduction do not change the electrooptic …

We report how the photorefractive properties of cobalt-doped barium titanate (BaTiO_3) are
influenced by deep and shallow traps. The light-induced dark decay of the space-charge …

We characterize Rh: BaTiO3 by cw two-beam coupling experiments at 1.06 μm. We
demonstrate that all our measurements are well described by a single-carrier, single-site …

The intensity-dependent two-wave mixing gain at large modulation depth is measured in a
BaTiO3 crystal. We derive an expression of nonlinear space-charge field from Kukhtarev's …