Coaxial Holographic Data Recording

Atsushi Fukumoto

Holographic memory surpasses all other optical memories in both data density and data-transfer rateā€”but its development has lagged behind disk technologies. The coaxial recording method may enable holography to become an integral part of the optical storage marketplace of the future.


figureA blue-laser beam is recording a hologram on the rotating disk-type media.

Holographic memory may represent the next generation of data storage and archiving. Unlike DVDs and other optical discs in which information is stored on a plane, holographic storage technologies have volumetric memory. Thus, data density is not restricted by the diffraction limit.

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