| 偶氮苯侧链聚合物液晶薄膜的光致双折射和永久光学性存储研究 |
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| 引用本文： | 王长顺,尹国盛.偶氮苯侧链聚合物液晶薄膜的光致双折射和永久光学性存储研究[J].光子学报,1998,27(10):906-910. |
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| 作者姓名： | 王长顺 尹国盛 |
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| 作者单位： | [1]吉林大学物理系 [2]河南大学物理系 |
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| 摘 要： | 研究了一种含偶氮基侧链聚合物液晶薄膜,该液晶薄膜表现出显着的光致双折射(Δn～1.1×10-2).当关闭写光作用后,光致双折射的大小没有任何衰减,表现出永久光存储特性.光致双折射的擦除可通过将样品加热到接近其清亮点温度,或用一束圆偏振光照射来实现.分析了偶氮侧链聚合物永久性光学存储的物理机制.
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| 关 键 词： | 光致双折射 永久性光学存储 偶氮侧链聚合物 |
| 收稿时间： | 1998-06-01 |
PHOTOINDUCED BIREFRINGENCE AND REVERSIBLE OPTICAL STORAGE IN LIQUID CRYSTALLINE AZOBENZENE SIDE CHAIN POLYMERS |
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| Wang Changshun,Yang Yanqiang,Qiu Yong,Wei Zhenqian,Fei Haosheng.PHOTOINDUCED BIREFRINGENCE AND REVERSIBLE OPTICAL STORAGE IN LIQUID CRYSTALLINE AZOBENZENE SIDE CHAIN POLYMERS[J].Acta Photonica Sinica,1998,27(10):906-910. |
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| Authors: | Wang Changshun Yang Yanqiang Qiu Yong Wei Zhenqian Fei Haosheng |
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| Institution: | Wang Changshun,Yang Yanqiang,Qiu Yong,Wei Zhenqian,Fei Haosheng Department of Physics,Jilin University,Changchun 130023 P.R.China Yin Guosheng Department of Physics,Henan University,Kaifeng 475001 P.R.China Received date:1998-06-01 |
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| Abstract: | A liquid-crystallite with an azobenzene moiety as photoactive mesogenic unit is invesigated.Measurements of photoinduced birefringence reveal that the polymer possesses large magnitude of photoinduced birefringence(Δn～10-2 )and the characteristic of long-term optical storage.The resulting polarization information can be erased either by heating the sample to a temperature which is much higher than that of the glass transition,or by optical method with a circularly polarized light.The mechanism of long-term optical storage is discussed in this letter. |
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| Keywords: | Photoinduced birefringence Permanent optical storage Azobenzene side chain liquid crystalline |
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