We report the direct recording of electron-based photorefractive hologram in nominally
undoped Bi 12 TiO 20 crystals using 780 nm wavelength light without pre-exposure or any …

We report the presence of quasipermanent effects of photochromic and hole-photorefractive
nature in Bi 12 TiO 20 (BTO) at low irradiance at 514.5 nm. A new selective two-wave mixing …

We report nonstationary photorefractive holograms in absorbing Bi_12TiO_20 samples with
different degrees of hole-electron competition exhibiting resonance peaks due to electron …

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 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 …

We show that optical recording in undoped photorefractive titanosillenite Bi 12 TiO 20 (BTO)
crystals involve electrons, holes and ions, depending on the experimental conditions …

We report on the holographic recording on photorefractive Bi 2 TeO 5 crystals using λ= 633
nm wavelength light. We studied the behavior of this material under the action of this low …

Preillumination of Bi_4Ti_3O_12 at low temperature causes a transient enhancement of
diffraction efficiency for subsequent holographic recording. Diffraction efficiencies are …

Fr~ nge-lock~ ng techniques ar used for the recording of stable 90 0 phase-shifted running
holograms In photorefractive crystals. The use of this technique permits the characterization …

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