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Holographic Data Storage by Use of Computer Generated Hologram

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Arbitrary pattern in an arbitrary domain can be realized by computer generated hologram (CGH). If CGH is applied to the optical data storage, the complexity of the optical system can be eased. For example, a single spatial light modulator (SLM) can be used to express a fully-complex filed of a lightwave. Holographic data storage with a single amplitude SLM by use of CGH is presented. A signal beam and a reference beam are generated by a computer generated hologram (CGH). Owing to the characteristics of the CGH, the incident angle of a reference beam can be changed. This means that angular multiplexing is available.

© 2016 Optical Society of America

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