Three-dimensional optical data storage in a fluorescent dye-doped photopolymer

Mark M. Wang, Sadik Esener

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

We propose a new, to our knowledge, monolithic multilayer optical storage medium in which data may be stored through the diffusional redistribution of fluorescent molecules within a polymer host. The active portion of the medium consists of a photopolymer doped with a fluorescent dye that is polymerized at the focal point of a high-numerical-aperture lens. We believe that as fluorescent molecules bond to the polymer matrix they become more highly concentrated in the polymerized regions, resulting in the modulated data pattern. Since data readout is based on detection of fluorescence rather than index modulation as in other photopolymer-based memories, the problems of media shrinkage and optical scatter are of less concern. An intensity threshold observed in the recording response of this material due to the presence of inhibitor molecules in the photopolymer allows for the three-dimensional confinement of recorded bits and therefore multilayer recording. The nonlinear recording characteristics of this material were investigated through a simple model of photopolymerization and diffusion and verified experimentally. Both single-layer and multilayer recordings were demonstrated.

Original languageEnglish (US)
Pages (from-to)1826-1834
Number of pages9
JournalApplied Optics
Volume39
Issue number11
StatePublished - Apr 10 2000
Externally publishedYes

Fingerprint

Photopolymers
Optical data storage
photopolymers
data storage
Dyes
dyes
recording
Molecules
Multilayers
Optical multilayers
Photopolymerization
Polymer matrix
molecules
Lenses
polymers
numerical aperture
Fluorescence
shrinkage
Modulation
inhibitors

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Three-dimensional optical data storage in a fluorescent dye-doped photopolymer. / Wang, Mark M.; Esener, Sadik.

In: Applied Optics, Vol. 39, No. 11, 10.04.2000, p. 1826-1834.

Research output: Contribution to journalArticle

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