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 …

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 …

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 influence of beam coupling on photorefractive parametric oscillation generated in a
Bi_12SiO_20 crystal is investigated experimentally by comparing two configurations with …

We propose a theory of the instability of the space-charge field induced in a semiconductor
by the movement of light fringes against subharmonic generation. A crucial element of this …

We analyze the stability against parametric excitation of space-charge waves of the space-
charge field induced in a semiconducting crystal by a traveling light grating. We show that …

By using an alternative setup for photorefractive parametric oscillation in which wave mixing
between the recording beams is avoided it has become possible to make more detailed …

We show analytically and numerically that the decay of the light intensity caused by linear
absorption affects strongly the charachteristics of 2W-coupling enhanced by a moving light …