Photorefractive materials combine photoconductive and electro-optic properties: light affects
their electrical conductivity; their optical properties (refractive index, etc.) are affected by …

Photorefractive two-beam-coupling coefficients are measured and compared in thin and
thick cerium-doped strontium barium niobate crystals fabricated from the same boule. For …

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 …

Optical spatial phase rectification by limiting quadratic processing in photorefractive two-
beam coupling is proposed and demonstrated. We use this limiting quadratic processor to …

Nonlinear optical wave mixing in photorefractive materials is considered in the framework of
a two-dimensional model. Beam profile deformation is discussed in the case of two-beam …

We demonstrate a method of simultaneous holographic recording and readout in
photorefractive crystals that provides high write–read beam isolation and wide angular …

A theoretical analysis is presented of two-wave mixing in photorefractive materials in which
the complex amplitude of a weak signal beam has slowly varying but otherwise arbitrary …

Growth-induced striations in photorefractive media constitute phase gratings that scatter
transmitted light and therefore degrade the quality of reconstructed images in holographic …

A new implementation of an all-optical associative memory is presented. It is realized in a
nonresonant cavity containing a photorefractive and a nematic liquid crystal. The images …

The effectiveness of laser beam cleanup with photorefractive two-beam coupling is
evaluated. We compare the measured effectiveness of the method with that of spatial …