Epoxy-photopolymer composites: thick recording media for holographic data storage

Timothy J. Trentler; Joel E. Boyd; Vicki L. Colvin

doi:10.1117/12.429467

4 June 2001 Epoxy-photopolymer composites: thick recording media for holographic data storage

Timothy J. Trentler, Joel E. Boyd, Vicki L. Colvin

Proceedings Volume 4296, Practical Holography XV and Holographic Materials VII; (2001) https://doi.org/10.1117/12.429467
Event: Photonics West 2001 - Electronic Imaging, 2001, San Jose, CA, United States

Abstract

Archival data-storage based on holographic methods requires high performance recording materials. Here, we describe an epoxy-photopolymer composite material which is sensitive to visible light and can be fabricated as thick films. These materials are prepared by combining photopolymerizable vinyl monomers with a liquid epoxy resin and an amine hardener. As the epoxy cures at room temperature, a solid matrix is formed which surrounds the unreacted photopolymer. These vinyl monomers are subsequently photopolymerized during hologram recording. Typically the material consists of a low index matrix, composed of diethylenetriamine and 1,4- butanediol diglycidyl ether, and a high index photopolymer mixture of N-vinylcarbazole and N-vinyl-2-pyrrolidinone. Because the polymers can be prepared in thick formats, narrow angular bandwidth holograms with high diffraction efficiency can be recorded. A dynamic range up to 13 has been measured in these materials.

Citation Download Citation

Timothy J. Trentler, Joel E. Boyd, and Vicki L. Colvin "Epoxy-photopolymer composites: thick recording media for holographic data storage", Proc. SPIE 4296, Practical Holography XV and Holographic Materials VII, (4 June 2001); https://doi.org/10.1117/12.429467

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