This chapter provides the first systematic description of the basic properties of low-frequency
space-charge waves (SCWs) in photorefractive materials, and the effects caused by these …

The second order temporal differential equation, known to describe the space charge field in
the high frequency region, is solved approximately in a closed analytical form. The condition …

We formulate the fundamentals of the nonlinear theory of low-frequency space-charge
waves in semi-insulating photorefractive crystals. This includes an analysis of dispersion …

A theory explaining the effects of second harmonic generation and rectification of space-
charge waves (SCWs) in both space and time in photorefractive crystals and semi-insulating …

Theoretical and experimental investigations of the linear and nonlinear space–charge field
effects in photorefractive materials are reviewed. In particular, the aim is to explore the …

A recently predicted resonant effect for the enhancement of two-wave mixing in
photorefractive materials is investigated. The resonance occurs when the frequency of the …

It is shown that weakly damped space-charge waves exist in photorefractive crystals with a
sufficiently large lifetime–mobility product. The dispersion law, the damping constant, and …

An energy balance equation is derived with the aid of a partial differential equation
describing the space‐charge field in photorefractive materials. Expressions are found for …

In this chapter, the standard model accounting for the photorefractive nonlinearity in a
material is presented. The mathematical formalism of the rate equations has been …

The dispersion characteristics of space charge waves propagating in a photoconducting
material are derived. It is shown that both forward and backward waves can propagate …