扭曲缺陷胆甾相液晶盒光子带隙中的锥光图案
Conoscopic patterns in photonic band gap of cholesteric liquid crystal cells with twist defects
摘要：
本文从理论上研究了入射角对胆甾相液晶光传输的影响。本文研究了一种具有扭曲缺陷的多层夹层结构，这种扭曲缺陷是由于一层材料绕螺旋轴旋转而产生的。通过计算强度和偏振参数随入射角的变化，得到了厚层材料的锥光像和偏振分辨图。除了缺陷角引起的旋转外，还研究了厚层材料的缺陷角引起的旋转。从整体上看，当缺陷扭转角从零变化到其极限值或超过极限值时，发现缺陷模共振的环收缩到原点并消失。
英文摘要：
We theoretically investigate into the effects of the incidence angles in light transmission of cholesteric liquid crystal two-layer sandwich structures with twist defects created by rotation of the one layer about the helical axis.The conoscopic images and polarization resolved patterns are obtained for thick layers by computing the intensity and the polarization parameters as a function of the incidence angles.In addition to the defect angle induced rotation of the pictures as a whole, the rings of defect mode resonances are found to shrink to the origin and disappear as the defect twist angle varies from zero to its limiting value and beyond.
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