期刊
OPTICS COMMUNICATIONS
卷 282, 期 5, 页码 763-768出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2008.11.013
关键词
Azobenzene liquid-crystalline polymer; Dichroism; Birefringence; Polarization holography
类别
资金
- National Natural Science Foundation of China [10675083]
Photoinduced anisotropy in an azobenzene ionic liquid-crystal line polymer was investigated through dichroism, birefringence and polarization holography. A dichroism degree of 1.58 and a birefringence value Delta n similar to 10(-2) were achieved in the polymer film at room temperature, and the polymer film was found to possess the characteristics of reversible and long-term optical storage. Particularly the stored birefringence could be enhanced to Delta n similar to 10(-1) by annealing the film, and it is attributed to the thermal self-organization of the molecules. Furthermore, linear- and circular-polarization holographic recordings were accomplished in the polymer film and pure polarization gratings were produced. (C) 2008 Elsevier B.V. All rights reserved.
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