Published June 1, 1995
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Journal Article
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Fixing of photorefractive volume holograms in K1-yLiyTa1-xO3
Abstract
We report the f ixing of photorefractive holographic gratings with high eff iciency in a sample of K1-yLiyTa1-xNbxO3 doped with Cu, V, and Ti. Holograms are thermally fixed through the screening of a photorefractive space-charge field by a nonphotoactive species at elevated temperatures. Fixed holograms are revealed by illumination at lower temperatures. Diffraction efficiencies of 25% in a 0.54-cm-thick sample are measured. Holograms undergo thermal decay with a 0.67-eV activation energy.
Additional Information
© 1995 Optical Society of America Received December 23, 1994 The authors acknowledge the support of the Advanced Research Projects Agency University Research Initiative under U.S. Office of Naval Research grant N00014-92-J-1891Files
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