We analytically solve charge-transport equations for a photorefractive crystal with shallow
and deep traps. We predict that, if shallow traps can accumulate a high density of charge …

We find that the temporal shape and speed of dark decays of photorefractive gratings
depend on the light intensity used to write the grating. We attribute this to the fact that the …

This is the first characterization of both positive and negative charge carriers as well as deep
traps in any crystal sufficient to predict photorefractive behavior for all beam geometries on …

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 …

We employ an optical technique requiring no electrodes to measure three parameters
characterizing photorefractive traps in nominally undoped n-type bismuth silicate at 515-and …

Two optical beams can couple in a photorefractive crystal without using the electro-optic
effect. Beam coupling is due to a spatially modulated absorption caused by the …

Time-resolved buildup of a photorefractive grating induced in Bi12SiO20 by picosecond light
pulses clickable element to expand a topic LOGIN OR CREATE ACCOUNT PRISM …

Principal and complementary space-charge gratings are formed in photorefractive bismuth
silicon oxide with use of 785-nm light. An electric field is optionally applied in the direction of …

We study the polarization properties of volume phase gratings induced in photorefractive
materials that are both optically active and linearly birefringent, such as Bi_12SiO_20 …

We explain the apparent sublinear intensity dependence of photoconductivity in barium
titanate. In our model shallow acceptors act as a reservoir for charges optically excited from …