We examine the primary challenges for building a practical and competitive holographic random access memory (HRAM) system, specifically for size, speed, and cost. We show that a fast HRAM system can be implemented with a compact architecture by incorporating conjugate readout, a pixel-matched sensor array, and a linear array of laser diodes. It provides faster random access time than hard disk (100 microseconds or less) and similar bandwidth as silicon storage with lower cost. Preliminary experimental results support the feasibility of this architecture. Our analysis shows that in order for the HRAM to become competitive, the principal tasks will be to reduce spatial light modulator (SLM) and detector pixel sizes to 1 /spl mu/m, increase the output power of compact visible-wavelength lasers to several hundred milliwatts, and develop ways to raise the sensitivity of holographic media to the order of 1 cm/J.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Holographic random access memory


    Beteiligte:
    Wenhai Liu, (Autor:in) / Psaltis, D. (Autor:in)


    Erscheinungsdatum :

    2000-01-01


    Format / Umfang :

    821885 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Holographic Random Access Memory

    Liu, W. / Psaltis, D. / Institute of Electrical and Electronics Engineers | British Library Conference Proceedings | 2000


    Holographic Memory for Fast Data Access

    IEEE; Lasers and Electro-Optics Society | British Library Conference Proceedings | 1996


    Holographic memory for fast data access

    Hong, J. / Ma, J. / Chang, T. et al. | IEEE | 1996


    Random-phase encryption in reflection-type holographic memory

    Matoba, O. / Yokohama, Y. / Nitta, K. et al. | IEEE | 2004


    Random Phase Encryption in Reflection-type Holographic Memory

    Lasers and Electro-optics Society (Institute of Electrical and Electronics Engineers) | British Library Conference Proceedings | 2004