Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1539295 | Optics Communications | 2009 | 6 Pages |
Abstract
Photoinduced anisotropy in an azobenzene ionic liquid–crystalline polymer was investigated through dichroism, birefringence and polarization holography. A dichroism degree of 1.58 and a birefringence value Δn ∼ 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 Δn ∼ 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.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Xu Pan, Sufang Xiao, Changshun Wang, Peng Cai, Xuemin Lu, Qinghua Lu,