A model of the photorefractive effect is presented that includes a shallow-trap level (hole or
electron trap) as well as a species of deep traps with electron and hole excitation. It is shown …

Recent analytical results in the frame of photorefractive spatial-soliton propagation are
exploited to derive a novel scheme for the investigation of space-charge field formation in …

A microscopic model of the non-steady-state photoelectromotive force excited by a vibrating
interference pattern in a bipolar photoconductor under an external dc electric field is …

We show that a photoconductive crystal, placed in a rapidly alternating ac field and exposed
to nonuniform light, exhibits singularities of the induced space charge and discontinuities of …

This article analyzes nonlinear light propagation in semiconductors with bipolar conductivity
and nonlinear transport of electrons. We show how the competition between electron and …

We suggest visualizing space charge waves (SCW) in the near field in homogeneously
illuminated photorefractive crystal, using modulation of optical polarization induced by the …

Space-charge fields in photorefractive materials enhanced by moving fringes are studied for
simultaneous electron–hole transport. Two distinct models, one with a single set of impurity …

The excitation of a space charge wave in a uniformly illuminated photorefractive crystal by
an applied ac voltage is studied theoretically. A spatial differential equation for the ac …

The role of defects in the photorefractive effect is known in principle: their photoionization in
the brighter regions of a photorefractive crystal, illuminated by an inhomogeneous light …