Optical design for page access to volume optical media

Mark A. Neifeld, Mark Mc Donald

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

4F lens designs are optimized for parallel access to volume holographic memories. Aberrations, diffraction, and component tolerancing are considered for their impact on parallelism, crystal information density, and overall system storage density. We find that a parallelism of ≥105 bits per page and a crystal information density of ≈2 Mbits/mm3 are achievable with standard optical elements and that advanced designs offer significant improvements. Crystal surface tolerance measurements show that a diffraction-limited performance is achievable over apertures of 7.1 mm for LiNbO3 and 1.5 mm for KNSBN(60). Lens-tolerancing simulations show that lens decenter degrades peak parallelism and peak crystal information density. Anew nonconfocal 4F system design with improved performance is presented.

Original languageEnglish (US)
Pages (from-to)2418-2430
Number of pages13
JournalApplied optics
Volume35
Issue number14
DOIs
StatePublished - May 10 1996

Keywords

  • Lens design
  • Optical data storage
  • Parallel access
  • Photorefractive holography

ASJC Scopus subject areas

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

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