曹暾

个人信息Personal Information

教授

博士生导师

硕士生导师

主要任职:光电工程与仪器科学学院院长、党委副书记

其他任职:辽宁省先进光电子技术重点实验室副主任,大连市新型功能材料与光电子器件重点实验室主任,中国超材料学会理事,中国机械工程学会极端制造分委员会委员,国际先进材料学会会士,Microsystems&Nanoengineering、chemosensors等期刊副编辑

性别:男

毕业院校:布里斯托尔大学

学位:博士

所在单位:光电工程与仪器科学学院

学科:光学工程. 电磁场与微波技术. 光学. 测试计量技术及仪器. 精密仪器及机械

办公地点:研教楼706

联系方式:0411-84706156

电子邮箱:caotun1806@dlut.edu.cn

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Circular dichroism in planar achiral metamaterial

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论文类型:会议论文

发表时间:2015-07-01

收录刊物:EI、CPCI-S、Scopus

页面范围:107-109

关键字:circular dichroism; metamaterial; chiral

摘要:We investigate the polarization properties of a two-dimensional array of metallic elliptical nanoholes in the visible wavelength region. The calculated spectra reveal that such a nonchiral structure exhibits a circular dichroism. The proposed structure is a 2D anisotropic system that possesses two principle polarization directions, which gives rise to different polarization modes along long and short diameters of an elliptical nanohole. When the nonchiral elliptical hole forms a chiral arrangement with the off-normal incident wave vector, the two different polarization modes introduce a net polar vector that forms a chiral triad. Therefore, circular dichroism can be observed in a nonchiral elliptical nanohole array.