In lithium niobate crystals the focused beam of an argon-ion laser induces birefringence
changes. We investigate the intensity dependences of the saturation value of these …

Transient and steady-state measurements of photoinduced birefringence in Hf-doped
congruent lithium–niobate crystals are presented. Through a systematic investigation of …

Transient and steady-state measurements of photoinduced birefringence in single-domain
and periodically poled lithium niobate (LN) crystals containing different nonphotorefractive …

The experimental measurements of the photorefractive damage in a series of zinc doped
congruent lithium niobate are reported and discussed. The first experimental technique used …

The photorefractive properties of stoichiometric LiNbO_3 crystals with a small number of
defect densities grown by the double-crucible Czochralski method are investigated and …

Abstract crystals at continuous-wave illumination are reported. The investigation clearly
indicates an increase in the photorefraction amplitude Δn s (at saturation) with light intensity …

In this work we studied photorefractive effect of lithium niobate (LiNbO 3) doped with Zn, In,
and Na at ultraviolet (UV) wavelength down to 351 nm. It is found that the UV photorefraction …

Wavelength conversion using parametric processes is crucial for a large range of photonic
applications including ultrafast all-optical processing and generation of new visible …

Macroscopic light patterns are thermally fixed in photorefractive iron-or copper-doped LiNbO
3 crystals with different hydrogen concentrations. Spatially resolved absorption …

Reduced LiNbO3 crystals change their optical absorption under illumination with blue or
green pump light. We measure the dependence of this effect on pump intensity I at different …