The photocurrent dark decay in photorefractive materials is theoretically analyzed by using
two different dynamical approaches-namely, the shallow traps and electron-hole transport …

We have found simple analytical solutions for the coupled differential equations that are
commonly used to describe unipolar photoconduction in a homogeneous material with …

Photorefractive materials have been assuming ever increasing prominence in the non-linear
optics field due to their unique capability for displaying strong non-linear effects at milliwatt …

A new model of two species of electron–hole with shallow electron trap is presented. The
model predicts that if the shallow trap accumulates large density of charge carriers, the …

The steady‐state space‐charge field and the response time of a photorefractive material
illuminated with a sinusoidal interference pattern are derived for two models in which both …

Depending on their characteristics (energy, concentration,...) localized imperfection levels,
directly or indirectly, determine the properties of photorefractive materials. The aim of this …

For most regimes descriptions of photorefractive behavior by electron–hole transport with a
single species of impurity levels and by electron–hole transport with two species of impurity …

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 …

The time evolution of the charge carrier density, ionized donor density and space‐charge
field under a sinusoidal light pattern have been calculated by solving numerically the …

The transient behavior of the fundamental amplitude of the photorefractive space-charge
field is derived without restrictions within the band transport model. The two-wave mixing …