Large values of the exponential gain coefficient Γ are obtained (Γ≂ 8–12 cm− 1) when
recording with a moving grating in photorefractive BSO crystals (nearly degenerate two …

The amplification of the input signal beam in two-wave mixing experiments with
photorefractive Bi 12 SiO 20 crystals is achieved when an additional phase shift is …

The diffraction efficiency and energy transfer are investigated in photorefractive Bi 12 SiO 20
crystals (BSO). Dependence on fringe spacing, electric fields, light intensity and rise-time …

It is shown that under uniform illumination and application of an external electric field, a
phase volume hologram in a photorefractive crystal exists in the form of relaxing running …

The energy transfer between two beams (signal and reference, respectively) writing a
dynamic-volume hologram in photorefractive BSO crystals is applied to the image …

The theory for two-wave mixing in a photorefractive material with an external electric field
and a moving grating is developed. Large gain enhancements are predicted for grating …

We report coherent oscillations due to self-induced moving gratings in photorefractive BSO
crystals when recording with an external applied field. Different types of ring and phase …

We present the first demonstration of a room-temperature grating fixing process in a
photorefractive Bi l2Si02o crystal. This arises from a space-charge compensation due to a …

Energy transfer between two beams interfering in an electrooptic Bi 12 SiO 20 crystal is
analyzed as a function of the spatial frequency of the recorded hologram. We report high …

We present an analytical theory of vectorial wave coupling in photorefractive cubic crystals
which are, in general, optically active. The theory is based on the systematic use of the …