| 扭曲向列相液晶在复合消色差延迟器件中的应用 |
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| 引用本文： | 史萌,吴福全,赵爽,唐恒敬,邓红艳.扭曲向列相液晶在复合消色差延迟器件中的应用[J].激光技术,2006,30(3):280-282. |
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| 作者姓名： | 史萌 吴福全 赵爽 唐恒敬 邓红艳 |
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| 作者单位： | 1.曲阜师范大学, 激光研究所, 曲阜, 273165 |
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| 摘 要： | 借助琼斯矩阵对扭曲向列相(TN)液晶的光学性能进行了分析,发现在外加电压调制下的TN液晶盒,在选取的液晶厚度合适时,可等效为对应液晶厚度的特定波长λ/2波片,通过合理的设计搭配,与两个λ/4波片进行组合,使其整体作为一个偏振调制元件。经计算可知,当所加电压大于TN液晶盒转向的阈值电压时,其作用相当于一个消色差的λ/4波片或λ/2波片;当撤掉外加电压时可作为一般的90°旋光器。
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| 关 键 词： | 光学器件 扭曲向列相液晶 琼斯矩阵 消色差 延迟器件 |
| 文章编号： | 1001-3806(2006)03-0280-03 |
| 收稿时间： | 2005-05-31 |
| 修稿时间： | 2005-06-17 |
The application of twisted nematic liquid crystal in composition achromatic wave-plate |
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| SHI Meng,WU Fu-quan,ZHAO Shuang,TANG Heng-jing,DENG Hong-yan.The application of twisted nematic liquid crystal in composition achromatic wave-plate[J].Laser Technology,2006,30(3):280-282. |
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| Authors: | SHI Meng WU Fu-quan ZHAO Shuang TANG Heng-jing DENG Hong-yan |
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| Abstract: | Based on Jones matrix,the property of twisted nematic liquid crystal(TNLC)is studied. It is found that TNLC modulated by voltage is equivalent to λ/2 wave-plate with proper thickness. Furthermore combination TNLC with two λ/4 waveplate can be equivalent to achromatic λ/4 or λ/2 wave-plate wholly when the voltage is higher than liminal voltage,or it can be used as a common 90° rotationer when the voltage is removed. |
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| Keywords: | optical devices twisted nematic liquid crystal Jones matrix achromatic delay device |
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