A new architecture for photorefractive adaptive filtering is introduced. This architecture is
based on the principle of time-integrating correlator with a photorefractive material as the …

The complex coupling constant of a photorefractive polymer was measured as a function of
an applied electric field by use of a modified ac phase modulation technique. We …

Real-time direct measurement of the amplitude and the phase of photorefractive fields is
performed for all stages of photorefractive grating formation including saturation. The …

A heterodyne technique is presented for the independent, direct measurement of the
amplitude and phase of photorefractive space-charge fields during uninterrupted buildup …

The phase shift between the intensity pattern and the index pattern in two-wave mixing
experiments has been determined from measured values of photorefractive two-wave …

We demonstrate the formation of a stable refractive-index grating with nearly degenerate
four-wave mixing in a photorefractive strontium barium niobate crystal. This is accomplished …

We describe the recent results of our efforts to characterize a photorefractive crystal to be
used as a time-integrating device in an optically implemented null-steering adaptive …

We propose a configuration for multiplexed holographic storage that uses different diffracted
beams generated from an acousto-optic deflector (AOD). The AOD is driven by amplitude …

The photorefractive phase shift is a measure of the spatial shift of a photorefractive index
grating with respect to the light interference fringes that form the grating. The phase shift …

A technique for real time direct measurement of both the amplitude and phase of
photorefractive space charge fields during grating formation is presented. Photorefractive …