A photorefractive frequency converter and phase-sensitive detector is proposed and
demonstrated. Dynamic photorefractive theory is used to examine device characteristics for …

A photorefractive time correlation motion detector is demonstrated. This device overcomes
the material response time limitation associated with other photorefractive motion detectors …

We review theories and experimental demonstrations of oscillation with photorefractive gain.
The unidirectional ring resonator; the linear passive phase conjugate mirror, a phase …

We demonstrate a self-organizing photorefractive circuit that demultiplexes a beam that has
two signals imposed on separate optical carrier frequencies into two beams, each …

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 …

Frequency detuning effects in photorefractive oscillators are used in a new type of (passive)
interferometry which converts optical path length changes to frequency shifts, Such an …

An optical method for vibration detection and spectral analysis based on photorefractive
frequency domain processing is presented. The method utilizes the photorefractive effect in …

The response of a photorefractive phase conjugator to time-varying signals is examined.
Maxwell's equations are coupled to the material equations followed by linearization using a …

An optical photorefractive frequency-domain method is described for measuring
displacement amplitude and phase of vibrating surfaces. The method is applicable to …

The optical feature extractor is a photorefractive ring oscillator that can identify the strongest
spatio-temporal component of its input space. The theoretical sections discuss the design …