Linear diffraction of light waves on periodically poled domain structures in lithium niobate crystals: collinear, isotropic, and anisotropic geometries

Perturbations of a dielectric tensor induced by domain walls of periodic domain structures in ferroelectric crystals: contribution to the Bragg diffraction of light waves

“…They result from the joint manifestation of the reverse flexoelectric and elasto-optic effects and are described by equations ( 17) and (18). Anisotropic diffraction of a laser beam of this type was experimentally observed in [29]. However, the dependence of its efficiency on the Bragg-diffraction orders shows that the main contribution to the diffraction response in that case yields the perturbations of the components ∆ε YZ 23 (x) = ∆ε YZ 23 (x) of the dielectric tensor.…”