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Optical Information Storage in Poly [3-Methyl-4-Bis( N,N- Oxyethylene)Imino-4-Nitro-Azobenzene Sebacoyl] Film by Degenerate Four-Wave Mixing |
| BI Dong-ying1;ZHANG Ling-zhi2;LIANG Zhao-xi2;XIE Zhong-hui3;LIN Wei-zhu3;LIAO Chang-jun4;LIU Song-hao4 |
| 1Department of Physics, University of Science and Technology of China, Hefei 230026
2Institute of Polymer Science, 3 Department of Physics, Zhongshan University, Guangzhou 510275
4Institute of Quantum Electronics, South China Normal University, Guangzhou 510631 |
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| Cite this article: |
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BI Dong-ying, ZHANG Ling-zhi, LIANG Zhao-xi et al 1997 Chin. Phys. Lett. 14 284-286 |
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Abstract Optical storage caused by photo-induced anisotropy in poly[3-methyl-4- bis(N, N-oxyethylene) imino-4-nitro-azobenzene sebacoyl] film is studied by degenerate four-wave mixing. Molecule orientation gratings which are stable for three months are produced. The grating in the sample can be “erased” by using circular polarized light. So an azobenzene polymer thin film can be used many times to restore optical information.
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| Keywords:
42.70.Ln
42.65.Hw
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Published: 01 April 1997
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| PACS: |
42.70.Ln
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(Holographic recording materials; optical storage media)
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42.65.Hw
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(Phase conjugation; photorefractive and Kerr effects)
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