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Effects of Laser-Induced Heating on the Photoinduced Birefringence in Azobenzene-Side-Chain Copolymer |
| YANG Jun1;MING Hai1;ZHANG Jiang-Ying1;WANG Pei1;LANG Jian-Jing1;LU Yong-Hua1;LIU Jian2;ZHANG Qi-Jin2 |
| 1Department of Physics, University of Science and nTechnology of China, Hefei 230026
2Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026 |
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| Cite this article: |
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YANG Jun, MING Hai, ZHANG Jiang-Ying et al 2003 Chin. Phys. Lett. 20 1826-1828 |
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Abstract The photoinduced birefringence was observed in the polymer poly[2-(4-(4-cyanophenyl) diazenyl phenyloxy) ethoxyl methacrylate] with a cw 532 nm laser. The azobenzene polymer character has been studied under the conditions of various illuminating time and light intensities. By analysing the processes of reorientation, the effect of laser-induced heating has been introduced to the buildup of photoinduced birefringence in azobenzene-side-chain copolymer. The curves for the buildup of birefringence were fitted with a modified function, i.e., biexponential curves and Gaussian curves. The relationship among all the parameters has also been presented. With the modified fitting function, we obtain a better fitting result.
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| Keywords:
71.20.Rv
78.20.Wc
42.70.Jk
42.81.Gs
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Published: 01 October 2003
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