We investigate experimentally the fundamental characteristics of space-charge waves
excited in a photorefractive crystal of Bi_12SiO_20. Features such as their transient rise and …

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 …

We present a theoretical model of photorefractive parametric oscillation that covers, for the
first time, to our knowledge, the occurrence of the whole spectrum of parametric processes …

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 new mechanism for enhancing the photorefractive grating amplitude in Bi_12SiO_20 is
presented. We show experimentally that, by recording two photorefractive running gratings …

The phase part of the system of equations describing two-wave mixing in a photorefractive
strongly inertial medium is studied analytically and numerically. It is shown that the solution …

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 …

We develop the nonlinear theory of transversal parametric oscillation in photorefractive
sillenite crystals. The theory is nonlinear in the sense that the nonlinear feedback from the …

We report on the first experimental observation of so-called nondegenerate photorefractive
parametric amplification. We show that due to this effect it is possible for a weakly modulated …