Abstract

We report what we believe to be the first observation of photorefractive gratings in lead barium niobate (Pb1-xBaxNb2O6; PBN). A diffraction efficiency of 9% and a beam-coupling coefficient of 9  cm-1 are obtained. After thermal fixing a grating of 0.5% is revealed at room temperature. We can improve this diffraction efficiency by optimizing fixing temperature, timing, and material parameters.

© 1997 Optical Society of America

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