HOLOGRAPHIC STORAGE IN DOPED BARIUM SODIUM NIOBATE (Ba2NaNb5O15)

Abstract
This paper describes the results obtained using doped crystals of Ba2NaNb5O15 for phase holographic storage. Very short-lived holograms with less than 1% diffraction efficiencies were obtained in nominally pure crystals. Doping with Fe and Mo yields holograms with much longer decay times and diffraction efficiencies of 67% in a 0.32-cm-thick crystal. The energy density required to reach 40% diffraction efficiency was 6 J/cm2.