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

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Title: Rewritable polarization-encoded multilayer data storage in 2,5-dimethyl-4-(p-nitrophenylazo)anisole doped polymer
Author(s): Li, Xiangping; Chon, James W. M.; Wu, Shuhui; Evans, Richard A.; Gu, Min
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
Publication type: Journal article
Research centre: Swinburne University of Technology. Faculty of Engineering and Industrial Sciences
Source: Optics Letters, Vol. 32, no. 3 (2007), p. 277-279
Publication year: 2007
Keyword(s): Optical data storage; Optical memories; Optical recording; Optical storage-recording materials
Publisher: Optical Society of America
ISSN: 0146-9592
Publisher URL: http://dx.doi.org/10.1364/OL.32.000277
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