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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
Low-loss dual-band double-negative chirped metamaterial
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论文类型：期刊论文
发表时间：2015-01-01
发表刊物：JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
收录刊物：SCIE、EI、Scopus
卷号：32
期号：1
页面范围：108-113
ISSN号：0740-3224
摘要：We present numerical modelling of a dual-band double-negative chirped metamaterial (MM) in the optical region. The MM has an elliptical nanohole array (ENA) penetrating through a metal/dielectric material/metal (Au-Al2O3-Au) film. We consider the case when the chirp is introduced by displacing the positions of the ENA along the short axis of the elliptical apertures inside the primitive cell. We demonstrate that these chirped MMs can provide a dual-band negative refractive index (NRI) with simultaneous negative permittivity and permeability in both near infrared (N-IR) region and mid-infrared (M-IR) region, respectively. As the neighboring elliptical holes are moved closer to each other the NRI in the N-IR region blue shifts to the shorter wavelength with a decreasing magnetic resonance, whereas the NRI in the M-IR region red shifts to the longer wavelength with an increasing magnetic resonance. This structure possesses a high value of figure-of-merit owing to the large size of the elliptical apertures. (C) 2014 Optical Society of America