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Holographic data storage is a new optical technology which allows storing an important number of bits in a recording material. In this work, two different types of modulations, defocused binary intensity modulation and phase modulation, are compared to obtain which modulation could be the most suitable for holographic data storage. The best modulation would be the modulation with a homogeneous distribution of energy in the FT plane with no zero frequency peak.This work was supported by “Ministerio de Ciencia e Innovación” (Spain) under projects FIS2008-05856-C02-01 and FIS2008-05856-C02-02 and by the University of Alicante under project GRE09-10

Reduction of zero-order spatial frequencies by using binary intensity and phase modulations in holographic data storage