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 …

Analysis of two-wave coupling in cubic crystal classes 23 and 4¯ 3m is presented for
arbitrary orientation of the grating vector and the applied electric field. We show that the most …

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 …

The influence of optical activity on two-wave mixing (TWM) in photorefractive BTO and BSO
crystals in the absence of an applied field is studied both theoretically and experimentally …

A theory of polarization-dependent four-wave processes is developed for photorefractive
nonlinear media. It includes the classification of possible elementary nonlinear processes …

On the basis of the standard model for the photorefractive nonlinearity we investigate
whether a systematic description of the dependence of two-beam energy exchange on …

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 …

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 investigate the dispersion law (relationship between Ω k and K) of photorefractive waves
using a new experimental method based on the excitation of photorefractive waves by a …

It is shown that the propagation of steady-state spatial solitons in a bismuth titanium oxide
(Bi_12TiO_20) photorefractive crystal is strongly affected by the presence of concomitant …