Abstract
AbstractNo compositional variations of periodically poled lithium niobate (PPLN) (period of ~28 μm) are found using spatially resolved near edge X-ray adsorption fine structure (XANES) spectra taken at the Nb K-edge. The periodicity the ferroelectric domain patterns can be imaged using piezoresponse force microscopy (PFM) and atomic force microscopy (AFM) and the periodic variations in the optical properties of PPLN result in a nonlinear optical response in the IR region at a fixed scattering angle.
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