Abstract

The design and performance characteristics of a computer interfaced optical memory system that utilizes holographic storage in photorefractive LiNbO3 crystals are examined. An observed resolution limit of 145 μm (at 31 cm beyond the hologram) agrees closely with a 155-μm limit estimate based on spatial filtering and diffraction considerations. Angular and wavelength indexing are compared. A 3-D storage density limit of 1010 bits/cm3 is estimated for angular indexing with the viewing angle optimized.

© 1980 Optical Society of America

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