Characterization of microstructures in lithium niobate crystals by digital holography

Ferroelectric domain micro structuring of bulk lithium Niobate is very useful for optoelectronic applications such as non-linear optic employing Quasi-Phase-Matching for efficient harmonic and parametric conversion processes. We report on the application of digital holography as metrological tol for the inspection and characterization of the domain structures in bulk lithium niobate samples