It is shown that the two-wave amplification in an alternating field in photorefractive crystals of
the sillenite family is strongly affected by the drift length of photoinduced charge carriers …

We present a theory of resonant photorefractive wave coupling in cubic photorefractive
crystals that are in general optically active. This theory includes the resonance enhancement …

We investigated both analytically and numerically the simultaneous influence of higher-
harmonic gratings and subharmonic gratings on the threshold for generation of the …

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 …

The steady-state beam-coupling gain during two-wave mixing in photorefractive materials
has been analyzed in the strong nonlinear regime (high modulation depths). Numerical …

Using the so-called ac field technique, we investigate experimentally the influence of optical
beam coupling on the generation of subharmonic gratings in a photorefractive sillenite …

A new mechanism for enhancing the photorefractive grating amplitude in Bi_12SiO_20 is
presented. We show experimentally that, by recording two photorefractive running gratings …

Efficient enhancement of the two-wave mixing gain in photorefractive Bi 12 SiO 20 by
applying ac-sinusoidal electric fields at 11 kHz is reported. At a wavelength of 514.5 nm, the …

We report strong competition of intensities between spontaneously emerging beams
(subharmonics) and other diffracted beams in two-wave mixing experiments with two …

The dynamic behavior of the complementary space-charge gratings formed in a
Bi_12SiO_20 crystal through prolonged recording at 780 nm is used to determine a number …