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

A review is given of the present status of the non-linear optical materials and devices, and
their applications for optical signal processing and computing. The primary motivation …

Strontium barium niobate (SBN) was doped with rhodium to enhance its photorefractive
behavior. Crystals with six different Rh concentrations, ranging from 0.015 to 0.20 wt …

We characterize the performance of photorefractive Sr_0. 6Ba_0. 4Nb_2O_6 under an
externally applied voltage. We compared the field dependences of the gain coefficient …

The dynamics of a composite grating that consists of an original grating and a newly
superimposed grating are investigated for memory applications by solution of coupled-wave …

The technique of moving gratings in a photorefractive crystal is applied to the edge
enhancement of objects and edge-enhanced optical correlation. The nonlinear dependence …

We investigate the enhancement of the diffraction efficiency of dynamic gratings recorded in
a bismuth silicon oxide crystal at large modulation by the moving-grating technique. The …

A significant enhancement in the diffraction efficiency of multiplexed holograms recorded in
cerium-doped S r 0.75 B a 0.25 N b 2 O 6 was achieved by applying a negative electrical …

Optoelectronic devices with free-space optical interconnections offer new possibilities in
massively parallel processing. The trade-offs involved in system design and device selection …

We present here the experimental results of photorefractive two-wave coupling in the
congruent strontium barium niobate (SBN: 61) crystal doped with 1000ppm Cr. Employing a …