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High capacity holographic storage system

  • US 5,519,651 A
  • Filed: 10/07/1993
  • Issued: 05/21/1996
  • Est. Priority Date: 10/07/1993
  • Status: Expired due to Term
First Claim
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1. A holographic storage system for storing information, comprising:

  • a holographic storage media having two substantially parallel surfaces, and a plurality of storage regions, each for storing a plurality of separately addressable pages of holographic stored data images;

    a first reflective surface for being disposed on one side of said holographic storage media and having a predetermined curvature;

    a second reflective surface for being disposed on the opposite side of said holographic storage media from said first reflective surface and having a predetermined curvature;

    a first optics system disposed on the same side of said first reflective surface as said storage media, said first optics system having;

    a first laser for generating a first coherent laser beam,a first reference beam deflection system for directing said first laser beam as a first reference beam to reflect from said first reflective surface to a select one of said plurality of storage regions in said storage media,a first addressing device for imparting addressing information to said first reference beam associated with a select one of said stored data images in said select storage region to allow for reconstruction thereof as a first reconstructed data beam; and

    a first detection system for receiving said first reconstructed data beam and detecting a data therein; and

    a second optics system disposed on the same side of said second reflective surface as said storage media, said second optics system having;

    a second laser for generating a second coherent laser beam,a second reference beam deflection system for directing said second laser beam as a second reference beam to reflect from said second reflective surface to a select one of said plurality of storage regions in said storage media,a second addressing device for imparting addressing information to said second reference beam associated with a select one of said stored data images in said select storage region to allow for reconstruction thereof as a second reconstructed data beam; and

    a second detection system for receiving said second reconstructed data beam and detecting a data therein.

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