Steady-state and time-resolved off-Bragg-angle diffraction experiments are used to
determine the structure and the dynamics of photorefractive gratings induced by interband …

A novel mechanism is used to record photorefractive gratings in dielectric crystals. The
photon energy of near-ultraviolet recording beams is larger than the energy gap, and the …

Near-ultraviolet light induces band-to-band electron transitions and is used to record
interband photorefractive gratings in undoped KNbO 3. The high absorption constant in the …

A simple model was developed to account for the generation of thin space–charge gratings
induced by band-gap illumination in photorefractive crystals. It includes the high-intensity …

We explore theoretically and experimentally how applying an electric field to a
photorefractive crystal affects the recording and the readout of a hologram. We present a …

This thesis is devoted to the investigation and the application of holographic gratings
induced by ultraviolet light in ferroelectric materials The gratings are recorded by exploiting …

We investigate the photorefractive response time of diffraction gratings in Rb^+-doped
KNbO_3 crystals. Two components of charge carriers, with different response times, are …

We report measurements of the holographic diffraction efficiency (HDE) of single
photorefractive gratings fixed by an externally applied voltage pulse in Sr0. 75Ba0 …

Transient photorefractive gratings in reduced KNbO3 are studied in a time regime from 1 μs
to 10 ms for various writing intensities and grating wavevectors. The observed grating build …

We report on the observation of switching and self-pulsing of guided modes in a planar
lithium niobate waveguide due to the photorefractive formation of holographic gratings. The …