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

Light-induced charge transport processes are essential for photorefractive effects in
electrooptic crystals. Charge driving forces, charge transport models and experimental …

3, LiTaO 3, BaTiO 3, Ba 1-x Sr x TiO 3 (, BST), Ba 1-x Ca x TiO 3 (, BCT), KNbO 3, KTa 1-x
Nb x O 3 (, KTN), Sr 1-x Ba x Nb 2 O 6 (, SBN) and Bi 12 (Si, Ti, Ge) O 20 (BSO, BTO, BGO) …

We present experimental data for BaTiO_3 that exhibit an intensity dependence in the
absorption coefficient and the two-beam coupling coefficient at intensities between 0.002 …

We have used a high-finesse cavity to measure the cw intensity dependence and dynamics
of blue-light-induced infrared absorption (BLIIRA) in KNbO_3 crystals for blue-light …

A new charge-transport model assuming one center in three different valence states is
discussed for explanation of the photorefractive effect. Quantitative description of …

Measurements of absorption, photoconductivity, and dark conductivity and of light-induced
absorption changes in photorefractive Sr_0. 61Ba_0. 39Nb_2O_6: Ce crystals with Ce …

Evolution of the light-induced absorption in a Bi 12 TiO 20 crystal is investigated at a
wavelength of 633 nm. It is found that the absorption coefficient evolution consists of fast and …

Two coherent light beams can couple in any absorbing material owing to a light-induced
modulation of the material's dielectric constant. In photorefractive crystals the coupling …

We use a cross-polarized pump–probe technique and 1-psec pulses at 596 nm to measure
a two-photon absorption coefficient of 0.1 cm/GW in BaTiO_3. A long-lived absorption is also …