… of the grating oscillations for the first spatial harmonic is also … running gratings can be referred
to as photorefractive waves, … ′ ) of the space-charge-field grating oscillations as a function …

… liquid crystal film [8] has also been reported. In this paper, we review the basic mechanisms
of space … storage grating formation in methylred-doped nematic films are also discussed. …

… suffered by the crystal. When the intensity 1(x) of the photoexciting light varies in space, the
… in the dark regions creating thereby a spatial variation, or “grating,” in the ambient Coulomb …

… nonlinear phenomena—amplification of light beams, photoinduced scattering, phase
conjugation, optical generation, etc—are based on the buildup of a spatial electric-field grating by a …

… refractive-index hologram gratings in photorefractive electro-optic crystals such as lithium …
and nonsinusoidal grating shapes. In this analysis, diffusion and drift in applied and space-…

… This review describes the history and present stateof photorefractive liquid crystal research.
… along the grating wavevector, which results in asinusoidal space-charge field. A phase …

… ) spatial optical solitons embedded in a fixed-volume grating in centrosymmetric photorefractive
crystals. … For shallow gratings, the soliton Fourier spectrum exhibits three lobes located at …

… Since the space-charge field varies as a function of crystal … as a measure to evaluate grating
strength. For calculation of the … in the space-charge field along the crystal thickness onto the …

… power transfer is spatially resolved throughout the crystal, and … photorefractive gratings can
be used to spatially resolve the power transfer distributions within SPTBC reflection gratings. …

… velocity is a function of the spatial frequency as it was found before for the thick crystal, \3
and we have now measured similar curves with the thin crystal at the same beam ratio, p = 103 …