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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 3 — Feb. 1, 2007
  • pp: 277–279

Rewritable polarization-encoded multilayer data storage in 2,5-dimethyl-4-(p-nitrophenylazo)anisole doped polymer

Xiangping Li, James W.M. Chon, Shuhui Wu, Richard A. Evans, and Min Gu  »View Author Affiliations


Optics Letters, Vol. 32, Issue 3, pp. 277-279 (2007)
http://dx.doi.org/10.1364/OL.32.000277


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Abstract

We report a rewritable polarization-encoded multilayer data storage method with a polymer film doped with the azo dye DMNPAA (2,5-dimethyl-4-(p-nitrophenylazo)anisole). It is found that under two-photon excitation by a linearly polarized femtosecond laser beam at wavelength 780 nm the optical axis of DMNPAA molecules can be oriented to the perpendicular direction of the beam via a trans–cis–trans isomerization process. As a result, multilayer polarization-encoded optical data storage is demonstrated by recording two letters of a bit spacing of 4 μ m in the same region of a given layer. It is shown that erasing and rewriting a particular layer is possible.

© 2007 Optical Society of America

OCIS Codes
(210.0210) Optical data storage : Optical data storage
(210.4680) Optical data storage : Optical memories
(210.4770) Optical data storage : Optical recording
(210.4810) Optical data storage : Optical storage-recording materials

ToC Category:
Optical Data Storage

History
Original Manuscript: October 5, 2006
Manuscript Accepted: October 27, 2006
Published: January 12, 2007

Citation
Xiangping Li, James W. M. Chon, Shuhui Wu, Richard A. Evans, and Min Gu, "Rewritable polarization-encoded multilayer data storage in 2,5-dimethyl-4-(p-nitrophenylazo)anisole doped polymer," Opt. Lett. 32, 277-279 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-3-277

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