Abstract
Three-dimensional optical data storage offers the potential for very large recording capacity and has the possibility of parallel read-out. In addition to research in volume holographic data storage, work has been done in point-like binary 3-D optical storage. Optical recording at a density of 1.6×1012 bits/cm3 has been demonstrated in a photopolymer using two-photon absorption [1]. The stored information consisted of less than 1% changes in the local index of refraction, and was read out serially with a differential interference contrast (DIC) laser microscope.
© 1996 Optical Society of America
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