We present a theoretical investigation of the nonlinear phenomenon of spatial frequency
mixing in photorefractive materials. In particular, we study the kinetics of the second …

The observation of diffraction spots from strong higher-order combinational gratings during
sequential recording of two photorefractive holograms in a LiNbO_3 crystal is reported. To …

We derive an analytical expression describing the effect of phase modulation in two-wave
mixing for dynamically recorded phase-shifted holograms in photorefractive materials. The …

This thesis is an experimental and theoretical investigation of nonlinear optics in photo-
refractive crystals, and applications thereof. Coherent light is used to induce nonlinear …

We demonstrate that the negative amplitude gain in a photorefractive two-wave-mixing
experiment under applied electric field measurably reduces the characteristic instability of …

The photorefractive effect [1] can loosely be defined as a light-induced change in the optical
properties of a material when the incident light is spatially nonuniform. The spatial …

We report on numerical simulations of two-wave mixing of Gaussian beams in
photorefractive materials. By using a model that takes the lateral intensity distribution of the …

Optical wave mixing plays an important role in many interesting and important phenomena
in nonlinear media. These include optical two-wave mixing (TWM), four-wave mixing (FWM) …

Photorefractive crystals are materials whose index of refraction is altered under illumination
by light. These crystals are both photoconductive and electrooptic. When a nonuniform light …

Two-wave mixing in photorefractive media has been studied theoretically and
experimentally by a number of researchers, and a wide range of prospective applications of …