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 …

A phase-aberrated pump beam was photorefractively coupled to a divergent signal beam in
BaTi03 at 514.5 nm. Pump-to-signal ratios were set to induce large modulation depths. No …

The facility to control light with light is becoming a key function for advanced photonics
architectures. The photorefractive effect is an optical nonlinearity that allows two or more …

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 …

We investigate the dynamics of multiple two-wave mixing in photorefractive materials. This is
the first time to our knowledge that a study of the dynamics of many pairs of two-wave mixing …

In the twenty years since the discovery of the photorefractive effect [4.1], it has proven to be
both a nuisance and an asset to the optics community. Originally, it was labelled" optical …

The response of photorefractive materials to sinusoidal intensity patterns of high modulation
depths is considered. It is shown that the induced refractive-index response in this regime is …

Photorefractive materials have been used in a wide variety of applications, as will be
discussed later. These materials have several features which make them particularly …

An expression for the gain in photorefractive two-wave mixing when radio-frequency (rf)
electric fields are applied to the material has been derived and compared with experiments …

Among the most widely used properties of photorefractive materials is their ability to couple
energy between two beams overlapping within the medium. This property allows for a weak …