Abstract
The angular-distribution parameters of the photoinduced scattering of light at a wavelength of 476.5 nm are used to determine the photovoltaic and diffusion field in nominally pure single crystals of stoichiometric composition (R=Li/Nb=1), grown from the melt with 58.6 mol% LiO2 (LiNbO3 stoich.), in nominally pure single crystals of congruent composition (LiNbO3) in congruent single crystals doped with Cu2+, Zn2+, Gd3+, Y3+, Er3+, B3+, (Cu2++Gd3+), and (Ta5++Mg2+). The photoinduced variations of the refractive index of the crystals are determined.
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