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

We report the observation of nonlinear photorefraction in pure aligned nematic liquid
crystals in the presence of an applied dc electric field. The effect is attributed to nematic axis …

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) …

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 …

Superlinear photovoltaic currents in LiNbO 3 are theoretically studied by using a two active
center model, with Fe 2+/Fe 3+ as primary center and Nb Li 4+/Nb Li 5+ as secondary …

Absorption, light-induced absorption changes, photo and dark conductivities, bulk
photovoltaic currents and two-beam coupling gain coefficients are measured for oxidized, as …

are annealed in a hydrogen atmosphere at various temperatures. After these reducing
treatments, absorption, light-induced absorption changes, two-beam coupling direction …

We report on the presence of photovoltaic effect in some Sillenite photorefractive crystals
and compare their behavior with that of the well known photovoltaic LiNbO 3: Fe crystal …

The static dielectric tensor is highly anisotropic in the tetragonal phase of barium titanate: the
static dielectric constant perpendicular to the c axis, ɛ⊥, is 40 times that parallel to the c …