| 向列相液晶中热致相位光栅的研究 |
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| 引用本文： | 丁广良,贺渝龙,是度芳,侯靖亚.向列相液晶中热致相位光栅的研究[J].华中科技大学学报(自然科学版),1989(5). |
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| 作者姓名： | 丁广良 贺渝龙 是度芳 侯靖亚 |
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| 作者单位： | 华中理工大学物理系
(丁广良，贺渝龙，是度芳)，华中理工大学物理系(侯靖亚) |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 本文研究了向列相液晶中热致相位光栅产生的简并四波混频过程.理论上得到的半定量公式表明,混频信号上升过程由快分量和慢分量组成.向列相MBBA的实验结果与理论分析相符.
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| 关 键 词： | 向列相液晶 简并四波混频 热致相位光栅 三阶非线性极化系数 响应时间 |
A Study of Thermal Phase Grating in Nematic Liquid Crystals |
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| Ding Guangliang He Yulong Shi Dufang Hou Jingya.A Study of Thermal Phase Grating in Nematic Liquid Crystals[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1989(5). |
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| Authors: | Ding Guangliang He Yulong Shi Dufang Hou Jingya |
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| Institution: | Ding Guangliang He Yulong Shi Dufang Hou Jingya |
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| Abstract: | The degenerate four-wave mixing process due to thermal phase grating in nematic liquid crystals is studied. A semiquantitative formula has been derived. It is shown that the rising process of mixing signal consists of two components, a fast and a slow one. The experimental results of MBBA in its nematic phase are in agreement with theoretical predictions. |
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| Keywords: | Nematic liquid crystals Degenerate four-wave mixing Thermal phase grating Third-order nonlinear susceptibility Response time |
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