Electrical Fixing of Holograms in Ferroelectric Crystals
Team Members: Adam Thompson
Faculty Advisors: Nadejda Najestkina
Electrical fixing is a well-known method for permanent recording of information in ferroelectric crystals[1]. SBN and BaTiO3 crystals are widely used materials for the investigation of this technique. During the electrical fixing of holograms the effect of crystal fatigue[2] is frequently observed. Crystal fatigue is defined as a loss of switchable polarization after repeated polarization reversals. The statement of this work is to record multiple gratings with high diffraction efficiencies in SBN and BaTiO3 crystals, obtain the controllable diffraction efficiency by applying different external voltages to the crystal, and to study the crystal fatigue effect.