| 一种新的非相干-相干光学转换方法 |
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| 引用本文： | 王长顺,张娅娜,魏振乾,杨延强,杨庆鑫,孙桂娟,费浩生,夏锦红.一种新的非相干-相干光学转换方法[J].光子学报,1999,28(3):214-217. |
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| 作者姓名： | 王长顺 张娅娜 魏振乾 杨延强 杨庆鑫 孙桂娟 费浩生 夏锦红 |
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| 作者单位： | 1. 吉林大学物理系,长春,130023
2. 平原大学建筑工程系,新乡,453003 |
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| 摘 要： | 报道了一种新的非相干-相干光学转换方法,该方法是基于对介质中光致双折射的局部擦除.所用样品为一种含偶氮基侧链聚合物液晶薄膜,该液晶薄膜具有显着的光致双折射和永久光学存储特性.将样品放置在两块相互正交的偏振片之间,用线偏振光在样品中产生稳定的双折射,然后通过入射的非相干图象进行局部地擦除,相干图象由一束He-Ne激光读出.所得相干图象为入射的非相干图象的负片.
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| 关 键 词： | 非相干－相干光学转换 光致双折射 偶氮侧链聚合物 光存储 |
| 收稿时间： | 1998-12-18 |
| 修稿时间： | 1998-12-18 |
INCOHERENT-TO-COHERENT OPTICAL CONVERSION BY MEANS OF AZOBENZENE LIQUID-CRYSTALLINE FILMS |
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| Wang Changshun,Zhang Yana,Wei Zhenqian,Yang Yanqiang,Yang Qingxin,Sun Guijuan,Fei Haosheng,Xia Jinhong.INCOHERENT-TO-COHERENT OPTICAL CONVERSION BY MEANS OF AZOBENZENE LIQUID-CRYSTALLINE FILMS[J].Acta Photonica Sinica,1999,28(3):214-217. |
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| Authors: | Wang Changshun Zhang Yana Wei Zhenqian Yang Yanqiang Yang Qingxin Sun Guijuan Fei Haosheng Xia Jinhong |
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| Institution: | 1. Department of Physics, Jilin University, Changchun 130023, P. R. China;2. Pingyuan University, Xinxiang, 453003, P. R. China |
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| Abstract: | A
new approach to incoherent to coherent optical conversion based on the erasing locally of the
photoinduced birefringence is reported.The employed sample is an azobenzene liquid
crystalline film,which possesses photoinduced birefringence of large magnitude and the
characteristic of long term optical storage.A steady birefringence is induced in the sample by
linearly polarized light and then erased locally by an incident incoherent image.The coherent
image is read from the film placed between two crossed polarizers with a He Ne laser
beam.The obtained coherent image is a negative replica of the incident scene. |
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| Keywords: | Incoherent to coherent optical conversion Photoinduced birefringence Azobenzene side chain liquid crystalline Optical memory |
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