The detection of small-amplitude ultrasonic vibrations is very important for applications in
such fields as nondestructive testing, quality control, and condition monitoring. The surface …

We show that a photoconductive crystal, placed in a rapidly alternating ac field and exposed
to nonuniform light, exhibits singularities of the induced space charge and discontinuities of …

The experimental study of the in-plain vibration of the speckle pattern in photorefractive GaP
and BTO crystals using the polarization self-modulation effect are presented. The simple …

On the basis of the vectorial theory of light diffraction in cubic photorefractive crystals, we
derive analytical expressions to describe the output intensities and polarization states of two …

This chapter provides the first systematic description of the basic properties of low-frequency
space-charge waves (SCWs) in photorefractive materials, and the effects caused by these …

We develop the theory of vectorial beam coupling in cubic photorefractive crystals to
describe the effect of fast phase modulation on output intensities and polarizations. Special …

Nonlinearity of the photorefractive response is studied experimentally and theoretically upon
two-beam interaction of light waves in a bismuth silicate crystal placed in an external …

The propagation of a light beam in a photorefractive crystal in an alternating meander
electric field is studied. A nonlinear equation is obtained for a spatial charge field formed in …

We report observation of the dynamic enhancement of photorefractive effect in dye-doped
nematic liquid crystal in the presence of an applied ac electric field. The multi-wave mixing …

New interferometric technique for the linear detection of small out-of-plane vibrations of a
rough surface caused by ultrasound is described. The technique is based on the …