Persistent holograms are recorded locally with red light in a LiNbO><sub>3</sub> crystal doped with Mg and Fe. Selective erasure is realized by use of a focused UV sensitizing light. We demonstrate the recording of 50 localized images as well as selective erasure in a 4 mm × 4 mm × 4 mm crystal. A comparison of the total recording time for <i>M</i> holograms obtained with the conventional distributed-volume recording and the localized methods is presented.
© 2000 Optical Society of America
Christophe Moser, Benjamin Schupp, and Demetri Psaltis, "Localized holographic recording in doubly doped lithium niobate," Opt. Lett. 25, 162-164 (2000)