A finite-difference technique was used to model photorefractive grating formations in sillenite
crystals under nonstationary recording conditions of applied ac electric fields. These …

We study the influence of bias dc electric field on the optical properties of volume phase
gratings formed in optically active photorefractive sillenite crystals. By considering a general …

The photorefractive grating formation dynamics were modeled numerically for bismuth
silicon oxide under conditions of stationary recording with a dc applied electric field. These …

Analyses of the kinetics and magnitude of enhanced two-wave mixing gain under externally
applied square-wave and sinusoidal electric fields are used to determine photocarrier drift …

The nonlinear differential equations describing the response of photorefractive material to a
moving sinusoidal intensity pattern that permits large modulation depth are solved by a …

The photorefractive response with moving gratings is investigated both numerically and
experimentally under varied fringe-velocity and modulation-depth (m= 0.002 to m= 1) …

We investigate experimentally the fundamental characteristics of space-charge waves
excited in a photorefractive crystal of Bi_12SiO_20. Features such as their transient rise and …

It is shown that spatial gratings in photorefractive crystals, induced by the standing
interference pattern of two coherent waves and an external alternating electric field, may be …

The polarization properties of diffraction from volume phase gratings in photorefractive
sillenite crystals such as bismuth silicon oxide (Bi_12SiO_20), bismuth germanium oxide …

Analytic expressions are derived for second-and third-order space-charge fields for a
moving intensity pattern and arbitrary field strengths. The dependence on the spatial …