Read/write demonstrator of rewritable holographic memory card system

E. Lorincz, F. Ujhelyi, P. Koppa, A. Kerekes, G. Szarvas, G. Erdei, J. Fodor, S. Z. Mike, A. Süto, P. Várhegyi, P. S. Ramanujam, S. Hvilsted

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We present the improved demonstrator of our rewritable holographic memory card system. High density optical storage is realized in a non-commercial optical set-up. Fourier transformed recording is used in a polarization holographic arrangement realizing reading and writing from the same side of the data carrier which is a modified plastic card. Holograms containing binary information of 300 × 220 bits are as small as 0.0484 mm2. The storage layer is amorphous polyester providing repeated writing and erasure cycles and thousandfold readouts without loss of information. Alternate read only system providing non-volatile storage can be realized using 635 nm laser diode.

Original languageEnglish
Pages (from-to)566-573
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4342
DOIs
Publication statusPublished - Jan 1 2002

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Keywords

  • Amorphous polyester
  • Holographic memory
  • Optical card
  • Polarization holography

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Lorincz, E., Ujhelyi, F., Koppa, P., Kerekes, A., Szarvas, G., Erdei, G., Fodor, J., Mike, S. Z., Süto, A., Várhegyi, P., Ramanujam, P. S., & Hvilsted, S. (2002). Read/write demonstrator of rewritable holographic memory card system. Proceedings of SPIE - The International Society for Optical Engineering, 4342, 566-573. https://doi.org/10.1117/12.453409