Cholesteric Gratings with Field-Controlled Period
Cholesteric Gratings with Field-Controlled Period
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DOI：
10.1063/1.120325
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发表时间：
1997-12
影响因子：
4
通讯作者：
D. Subacius;S. Shiyanovskii;P. Bos;O. Lavrentovich
中科院分区：
文献类型：
--
作者：
D. Subacius;S. Shiyanovskii;P. Bos;O. Lavrentovich
利用单向取向的液晶，在两个透明电极之间形成周期随电场变化的衍射光栅。在初始状态（零场）下，介电层平行于晶胞平面。电场产生可变周期的面内调制结构。拉曼-纳特和布拉格类型的衍射制度证明。
Diffractive gratings with period varied by an electric field are developed using a cholesteric liquid crystal confined between two transparent electrodes with unidirectionally treated alignment layers. In the initial state (zero field), the cholesteric layers are parallel to the cell planes. The electric field creates an in-plane modulated structure of variable period. Diffraction regimes of both Raman-Nath and Bragg types are demonstrated.