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Optics Letters

Optics Letters

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  • Vol. 24, Iss. 14 — Jul. 15, 1999
  • pp: 948–950

Use of two-photon excitation for erasable–rewritable three-dimensional bit optical data storage in a photorefractive polymer

Daniel Day, Min Gu, and Andrew Smallridge  »View Author Affiliations


Optics Letters, Vol. 24, Issue 14, pp. 948-950 (1999)
http://dx.doi.org/10.1364/OL.24.000948


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Abstract

We report what is believed to be the first use of a photorefractive polymer in erasable–rewritable three-dimensional bit optical data storage under two-photon excitation. We successfully demonstrate writing, erasing, and rewriting of multilayered information in a photorefractive polymer consisting of 2,5-dimethyl-4-(p-nitrophenylazo)anisole, 2,4,7-trinitro-9-fluorenone, 9-ethylcarbazole, and poly(N-vinylcarbazole). A three-dimensional bit density of 5 Gbits/cm3 is achieved by two-photon absorption under pulsed beam illumination at an infrared wavelength of 800 nm in the recording process. Complete erasing of the recording information is achieved by use of ultraviolet illumination.

© 1999 Optical Society of America

OCIS Codes
(210.0210) Optical data storage : Optical data storage
(210.4680) Optical data storage : Optical memories
(210.4810) Optical data storage : Optical storage-recording materials

Citation
Daniel Day, Min Gu, and Andrew Smallridge, "Use of two-photon excitation for erasable–rewritable three-dimensional bit optical data storage in a photorefractive polymer," Opt. Lett. 24, 948-950 (1999)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-24-14-948


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