Abstract

We describe a novel arrangement for obtaining enhanced nondestructive holographic readout in SBN using polarization effects and modification of the applied field between recording and readout. The enhancement is most pronounced for a certain range of spatial frequencies. The readout signal first decreases in strength but subsequently grows above the starting value, approaching 100% efficiency in some cases. Over 6 h of continuous readout have been achieved with efficiency remaining strong enough to provide one billion reads with SNR exceeding 20 dB.

© 1988 Optical Society of America