We report the measurement of the diffusion length, the Debye screening length and the
quantum efficiency of photoelectron generation in strongly light absorbing photorefractive Bi …

We report a new procedure allowing one to use fringe-locked running hologram
experiments to characterize photorefractive materials in a very simple, reliable and direct …

We report on the nonlinear relation between the resonance hologram velocity and the
recording light irradiance in fringe-locked running hologram experiments carried out on a …

We report a theoretical model for a photorefractive running hologram in bulk-absorbing
materials in the presence of self-diffraction and use this model to analyze experiments for …

The phase shift between the pattern of light onto a photorefractive crystal and the resulting
hologram at the very beginning of the recording process in two-wave mixing is analyzed and …

We propose a mathematical model for the movement in absorbing materials of
photorefractive holograms under feedback constraints. We use this model to analyze the …

This work presents a holographic method based on active feedback techniques for
determining the sign of the dominant charge carriers in photorefractive materials. A two-step …

Oscillating behaviour of diffracted light on uniform illumination of holograms, recorded in
photorefractive crystals Bi 12 TiO 20, is observed experimentally. From the experimental …

We have recorded running holograms in a photorefractive crystal with an applied electric
field, using a 90° phase-shift fringe-locked interference pattern of light. This method provides …

We report on the use of phase modulation in two-wave mixing with negative feedback to
record stabilized photorefractive running holograms with arbitrarily fixed phase shift between …