| Original Articles |
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Inverse Relaxation of Photoinduced Birefringence in a Liquid-Crystalline Azobenzene Side-Chain Polymer |
| PAN Xu, WANG Chang-Shun, ZHANG Xiao-Qiang |
| Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 |
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| Cite this article: |
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PAN Xu, WANG Chang-Shun, ZHANG Xiao-Qiang 2008 Chin. Phys. Lett. 25 3227-3230 |
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Abstract Photoinduced birefringence in a liquid-crystalline azobenzene side-chain polymer is investigated. It is observed that the birefringence does not show any decay but increases after switching off the pump light at room temperature. The magnitude of the birefringence relaxation is found to depend on the exposure dose of the pump light. A discussion about the mechanism of the inverse relaxation of birefringence is presented.
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| Keywords:
42.25.Lc
42.70.Ln
78.20.Fm
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Received: 12 May 2008
Published: 29 August 2008
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| PACS: |
42.25.Lc
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(Birefringence)
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42.70.Ln
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(Holographic recording materials; optical storage media)
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78.20.Fm
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(Birefringence)
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