A simple model of the effect of optical activity on two-wave mixing coupling constants in Bi
12 SiO 20 (BSO) crystal is developed. The model is tested for two particular transverse …

Beam coupling effects in an optically active photorefractive crystal of Bi 12 SiO 20 are very
much influenced by the polarization direction of the interacting beams. Analytic expressions …

We consider non-degenerate two-wave mixing in photorefractive Bi 12 SiO 20. It is shown
theoretically that the presence of absorption and optical activity in the photorefractive media …

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 …

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 …

Phase-conjugate beam reflectivity in photorefractive Bi_12SiO_20 (BSO) crystals is
analyzed as a function of the following parameters involved in the four-wave mixing …

The influence of beam coupling on photorefractive parametric oscillation generated in a
Bi_12SiO_20 crystal is investigated experimentally by comparing two configurations with …

An unexpected two-beam coupling energy exchange has been observed in Bi 12 SiO 20
without normal (electro-optic) photorefractive effects, using circularly polarized light and a …

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 steady-state beam-coupling gain during two-wave mixing in photorefractive materials
has been analyzed in the strong nonlinear regime (high modulation depths). Numerical …