Photorefractive two-beam coupling and energy transfer in BaTiO3 are studied at multiple
wavelengths using He-Cd, He-Ne, and diode lasers. The photorefractive signal beam gain is …

A two-dimensional model for the self-pumped phase conjugation in photorefractive crystals
is presented. Numerical simulations of the beam path for beam fanning and the self-pumped …

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 investigated 2k-grating-assisted self-pumped phase conjugation in photorefractive Ce:
BaTiO_3 crystals. The phase-conjugation process involves a combination of four-wave …

We present a two-beam coupling configuration in photorefractive BaTiO_3 that provides a
low-noise amplification of the signal to be detected. A two-wave mixing gain of 100 is …

We study here the four-wave mixing in photorefractive crystals with light beams of partial
temporal coherence. We consider the evolution of the mutual coherence of the beams due to …

Possibilities for increasing the gain increment in a phase conjugation configuration in the
case of stimulated diffuse backscattering in photorefractive crystals are discussed. In …

We study the symmetrical vectorial two-wave mixing in cubic photorefractive crystals when
the weak beam is always amplified in spite of its mutual direction in respect of the strong …

Contradirectional two-beam-coupling gains are measured in Rh-doped strontium barium
niobate (SBN) as a function of the Rh concentration and the incident pump—probe beam …

Coherent image amplification by two-wave coupling in a crystal of photorefractive BaTiO3 is
analyzed. This amplifier is optimized with respect to such operational characteristics as gain …