We demonstrate a narrow-bandwidth tunable optical filter in the telecommunication
wavelength region near 1550 nm using dynamic holography. A thick holographic reflection …

Interband photorefraction in near-stoichiometric lithium tantalate is demonstrated and
investigated at the deep-ultraviolet (UV) wavelength λ_UV= 257 nm. Formation of two …

Dynamic waveguides are induced beneath the surface of magnesium doped near-
stoichiometric lithium tantalate by deep UV light at lambda= 257 nm using the interband …

We show that doping of near stoichiometric lithium tantalate with magnesium leads to
enhanced interband photorefractive effects compared with undoped crystals. Investigations …

The dynamics of holographic grating induced by band-to-band excitation is investigated in
tin hypothiodiphosphate. The grating were written at a wavelength of 488 and 514 nm and …

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 …

Interband photorefractive gratings induced by deep ultraviolet light at λ UV= 257 nm are
investigated in pure and Mg-doped near-stoichiometric LiTaO 3. By controlling the …

In conventional photorefraction, which is the matter of most of the chapters in this book
series, the photoexcitation at the origin of the charge transport process occurs from mid-gap …

In optical parallel processing data pages are modulated on a laser beam and elab¬ orated
in a page by page modus. Data pages can contain several millions of bits, thereby providing …

The photorefractive effect, an indirect nonlinear optical effect mediated by the material
photoconductivity, offers the unique opportunity to obtain high sensitivity light-light …