Abstract

Tetragonal lead barium niobate Pb1xBaxNb2O6; 1-x<0.63 crystals are promising photorefractive materials for applications such as holographic data storage. Measurements of light-induced absorption in Ce-doped lead barium niobate Pb0.5Ba0.5Nb2O6 were performed. The induced absorption that was due to the presence of shallow traps was as large as 0.3 cm-1 at 633  nm and exhibited saturation behavior at green-pump intensity greater than 2 W/cm2. The temporal profile of the dark decay was a double exponential, and the activation energies of the slow- and the fast-decaying components were determined to be 0.16 and 0.3  eV, respectively.

© 1998 Optical Society of America

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