Hologram positioning servo for phase-encoded holographic data storage systems

Zoltán Göröcs, Tamás Sarkadi, Gábor Erdei, Pál Koppa

Research output: Contribution to journalArticle

4 Citations (Scopus)


We propose a method using phase encryption and hologram multiplexing to encode positional information into the hologram, which can be used during readout to find the correct position of the reference beam. We also include a method to align the position of the phase code in the reference beam during readout, with which we achieved approximately 1=100 hologram size (4:4 μm) precision electronically, without the need of a precise mechanical hologram positioning device. We prove the feasibility of the method with experiments.

Original languageEnglish
Pages (from-to)611-618
Number of pages8
JournalApplied Optics
Issue number4
Publication statusPublished - Feb 1 2010

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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