Kwon Do-Hoon, Werner Pingjuan L, Werner Douglas H
Department of Electrical Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, USA.
Opt Express. 2008 Aug 4;16(16):11802-7. doi: 10.1364/oe.16.011802.
Planar chiral metamaterials comprising double-layer dielectricmetal- dielectric resonant structures in the shape of a gammadion are presented in the near-infrared regime. The unit cell of the doubly-periodic metamaterial design is optimized using the genetic algorithm for maximum circular dichroism and for maximum optical activity. A circular dichroism value in excess of 50% is predicted for the optimized design. Maximum polarization rotatory powers in terms of the minimum allowed transmittances are also obtained and presented.
本文介绍了在近红外波段呈现出双层电介质-金属-电介质伽马形谐振结构的平面手性超材料。利用遗传算法对双周期超材料设计的单元胞进行优化，以实现最大圆二色性和最大旋光性。对于优化设计，预测其圆二色性值超过50%。同时还获得并展示了基于最小允许透过率的最大偏振旋转功率。
