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Published November 15, 1996 | Published
Journal Article Open

Fixing of volume holograms in ferroelectric K_(1-y)Li_yTa_(1-x)Nb_xO_3


We report on the fixing of photorefractive volume holograms in potassium lithium tantalate niobate with ionic gratings and also with ferroelectric domain-reversed gratings. A diffraction efficiency of 55% is obtained with domain reversal in a 2-mm-thick ferroelectric phase K1–yLiyTa1–xNbxO3 crystal doped with Co, V, and Ti. We measured the decay rate of the domain gratings and also of the initial electron gratings and ion gratings. The domain grating decay agrees with Vogel–Fulcher fits. The activation energies for ionic and electronic conductivity are 0.76 and 0.12 eV, respectively.

Additional Information

© 1996 Optical Society of America. Received June 13, 1996. The authors acknowledge the support of the Advanced Research Projects Agency University Research Initiative under U.S. Office of Naval Research grant N00014-920J-1891.

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August 22, 2023
October 13, 2023