The photorefractive effect in semiconductors leads to nonlinear interactions between optical
waves such as four-wave mixing; however, the required intensity levels are orders of …

We present for the first time, to our knowledge, a theoretical analysis of the nonlinear
dynamic space-charge field buildup when a photorefractive medium is exposed …

We report the simultaneous combined excitation of the space charge and photoconductivity
gratings in photorefractive Bi 12 Si O 20 and Bi 12 Ti O 20 crystals. The experiments are …

The band transport model describes charge statics and dynamics within photorefractive
materials. Here a steady-state solution is found for the setting in which an arbitrary optical …

We treat the photorefractive effect in oxide crystals at elevated temperatures where charge
compensation occurs in the absence of photoexcitation of the compensating species. These …

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 …

The generation of spatial subharmonics is reported in a photorefractive semiconductor
(CdTe: Ge) for the first time to our knowledge. Space charge waves with a narrow spatial …

Equations for the grating space-charge density and concentration of free carriers induced by
a standing light wave in an anisotropic photorefractive crystal are derived and solved. The …

On the dependence of the free carrier concentration on light intensity in photorefractive
crystals Page 1 1063-7842/01/4605- $21.00 © 2001 MAIK “Nauka/Interperiodica” 0635 …

Résumé Le modèle de transfert de charge dans l'effet photoréfractif prévoit sa construction
par une impulsion picoseconde. Nous en donnons une vérification expérimentale illustrant …