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 …

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 …

We apply directly a perturbative expansion to the hopping model of Feinberg. The first three
harmonics of the space‐charge field are presented, considering the contributions from the …

Although photorefractive thin films in the transverse geometry retain most of the basic
features of the bulk photorefractive materials, the abrupt changes in the dielectric constant …

The nonlinear differential equations describing the response of photorefractive material to a
moving sinusoidal intensity pattern that permits large modulation depth are solved by a …

Photorefractive materials combine photoconductive and electro-optic properties: light affects
their electrical conductivity; their optical properties (refractive index, etc.) are affected by …

We have used a two-dimensional charge transport model to study edge effects in
photorefractive thin films. Our result shows the presence of a large surface charge layer that …

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 …

The steady-state exact solution for the higher harmonic gratings that synthesize the space-
charge field is derived without restrictions within an electron-hole transport model which …

Space-charge field in photorefractive materials at large modulation clickable element to
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