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High-performance photorefractive polymers.

M Liphardt, A Goonesekera, B E Jones

    Science (New York, N.Y.)
    |January 21, 1994
    PubMed
    Summary
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    Researchers developed cost-effective photorefractive polymers that match or exceed crystal performance for instant hologram applications like image processing and data storage. These advanced polymers offer a promising, affordable alternative to traditional photorefractive crystals.

    Area of Science:

    • Materials Science
    • Optics
    • Polymer Chemistry

    Background:

    • Photorefractive materials enable "instant" holograms, crucial for applications in image processing, optical data storage, and distortion correction.
    • High costs associated with crystal growth and preparation have limited the commercial viability of photorefractive crystals.
    • Polymers offer a low-cost, versatile alternative for material fabrication.

    Purpose of the Study:

    • To develop photorefractive polymers with performance comparable or superior to existing photorefractive crystals.
    • To overcome the economic barriers associated with traditional photorefractive materials.

    Main Methods:

    • Construction of novel photorefractive polymer composites.
    • Characterization of holographic performance, including two-beam energy coupling gain coefficient.

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    Main Results:

    • Photorefractive polymers demonstrated performance matching or exceeding that of available photorefractive crystals.
    • The largest observed two-beam energy coupling gain coefficient for the polymers reached 56 per centimeter.

    Conclusions:

    • Photorefractive polymers present a viable, cost-effective alternative to photorefractive crystals.
    • These polymers hold significant potential for advancing applications in holography, image processing, and optical data storage.