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1 June 1975 Holographic Techniques for Recording of Electrical Signals on Moving Storage Media
H. Rull
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Optical Engineering, Vol. 14, Issue 3, 143232 (June 1975). https://doi.org/10.1117/12.7971873
Abstract
Three different approaches to record electrical signals by holographic techniques on moving data carriers are discussed. It is shown that, besides the well-known redundancy of holography and the possibility of attaining high storage densities, it is the flexibility of the holographic principle itself that makes holography an attractive recording method. Holographic parameters can be varied widely to meet specific boundary conditions imposed by the design of the data carrier or the storage medium. So, by using the "hy-brid" recording technique, holograms may be recorded which are invariant to hologram translations in two directions per-pendicular to one preferred axis, but with respect to this axis their sensitivity to displacements is increased by a factor of two. This hybrid technique combines the advantage of an increased linear storage density with drastically reduced precision requirements for guiding the data carrier and is thus very well suited for a holographic tape recorder.
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H. Rull "Holographic Techniques for Recording of Electrical Signals on Moving Storage Media," Optical Engineering 14(3), 143232 (1 June 1975). https://doi.org/10.1117/12.7971873
Published: 1 June 1975
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KEYWORDS
Holography
Data storage
Holograms
Holographic data storage systems
Optical design
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