We investigate contradirectional two-wave mixing with partially coherent waves in
photorefractive crystals in the nondepleted pump regime. Equations governing the …

We show that photorefractive materials having large electro-optic coefficients such as
BaTiO3 require relatively small electric field to induce sufficient phase mismatch for the …

We present measurements of the two-wave mixing gain as a function of frequency detuning
in photorefractive crystals. In many cases, this function is asymmetric, indicating that the …

We consider symmetries of two-wave mixing equations in photorefractive crystals, using
group theoretical methods. Symmetry groups for both the equations and conserved …

We propose and demonstrate an all-optical deflection switch with photorefractive duplex two-
wave mixing (TWM) in which common grating is shared by the TWM of the two control …

We present the analytical solution of the coupled equations system that describes two-wave
mixing (2WM) in photorefractive media as an adaptive beam combiner. The crystal operates …

By applying pulsed electric fields to photorefractive crystals, the two-wave mixing gain is
considerably increased. Unlike other enhancement techniques, the maximum gain is not …

Coherent amplification of images by two-wave mixing in photorefractive crystals is examined
with attention given to processing in the Fourier domain. It is shown that the gain that is …

We develop a numerical method to solve the coupled-wave equations for four-wave mixing
phase conjugation in a photorefractive crystal with unequal complex coupling constants; by …

The temporal behavior of the self-pumped phase conjugation in a photorefractive crystal
with a variety of forms of the seed is carefully studied using a two-dimensional model which …