Photoinduced processes and holographic storage in stilbene and stilbenecarboxaldehyde in a polymethylmethacrylate matrix

We report a spectrophotometric investigation of the photoprocesses in PMMA films containing stilbene or stilbenecarboxaldehyde. UV light induces trans-cis isomerization of the stilbene-type molecules accompanied by considerable changes in the absorption spectra. In the stilbenecarboxaldehyde/PMMA fi...

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Bibliographic Details
Published in:Journal of optics. A, Pure and applied optics Pure and applied optics, 2006-02, Vol.8 (2), p.221-224
Main Authors: Ilieva, D, Nedelchev, L, Petrova, Ts, Dragostinova, V, Todorov, T, Nikolova, L, Ramanujam, P S
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Holographic optical elements
holographic gratings
Holography
Optics
Physics
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Summary:We report a spectrophotometric investigation of the photoprocesses in PMMA films containing stilbene or stilbenecarboxaldehyde. UV light induces trans-cis isomerization of the stilbene-type molecules accompanied by considerable changes in the absorption spectra. In the stilbenecarboxaldehyde/PMMA films these changes are anisotropic. The photoanisotropy strongly depends on the wavelength of the exciting light. We also report, for the first time to our knowledge, holographic storage in these materials. The recorded holographic gratings are stable for months.
ISSN:1464-4258
1741-3567
DOI:10.1088/1464-4258/8/2/019