A simple method to trap and manipulate metallic micro/nano-particles on the surface of
photorefractive crystals is proposed. After inducing inhomogeneous charge density and …

The non-diffracting Bessel beam approach was used for the first time for the elaboration of
photovoltaic tweezers. We report the trapping of dielectric microparticles of chalk (CaCO 3) …

A numerical approach has been developed for simulating the recording and erasure kinetics
in photorefractive materials for high modulation of the light-intensity pattern. The recording …

In this chapter, the standard model accounting for the photorefractive nonlinearity in a
material is presented. The mathematical formalism of the rate equations has been …

The steady-state field gratings recorded in photovoltaic photorefractive materials have been
investigated theoretically for high modulation's depths of the light intensity pattern (up to …

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 …

The time evolution of the charge carrier density, ionized donor density and space‐charge
field under a sinusoidal light pattern have been calculated by solving numerically the …

Recent analytical results in the frame of photorefractive spatial-soliton propagation are
exploited to derive a novel scheme for the investigation of space-charge field formation in …

An analytical solution of the photoconductive material equations for dynamic holographic
gratings of arbitrary contrast has been obtained. A method of measuring high-contrast …

We experimentally demonstrated that dielectrophoretic (DEP) forces of alternating
photovoltaic fields generated near the surface of a photorefractive Fe-doped lithium niobate …