| 铝质亚波长圆孔阵列与牛眼结构的太赫兹波传输特性 |
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| 引用本文： | 陈麟,高春梅,徐嘉明,谢乐,朱亦鸣.铝质亚波长圆孔阵列与牛眼结构的太赫兹波传输特性[J].光学仪器,2013,35(6):1-6. |
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| 作者姓名： | 陈麟 高春梅 徐嘉明 谢乐 朱亦鸣 |
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| 作者单位： | 上海理工大学 上海市现代光学系统重点实验室, 上海 200093;上海理工大学 光电信息与计算机工程学院, 上海 200093;上海理工大学 上海市现代光学系统重点实验室, 上海 200093;上海理工大学 光电信息与计算机工程学院, 上海 200093;上海理工大学 上海市现代光学系统重点实验室, 上海 200093;上海理工大学 光电信息与计算机工程学院, 上海 200093;上海理工大学 上海市现代光学系统重点实验室, 上海 200093;上海理工大学 光电信息与计算机工程学院, 上海 200093;上海理工大学 上海市现代光学系统重点实验室, 上海 200093;上海理工大学 光电信息与计算机工程学院, 上海 200093 |
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| 基金项目： | 国家自然科学基金资助项目（11174207、61138001、61007059、61205094）；上海市自然科学基金资助项目（11ZR1425000）；国家重大仪器科学专项（2011YQ150021） |
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| 摘 要： | 使用太赫兹时域光谱系统(THz-TDS)对基于超常光学透射现象的铝质亚波长圆孔阵列和牛眼结构进行了实验研究。实验中,使用包含0.12.7THz的入射脉冲,观察到了明显的滤波效应,且滤波峰的中心频率恰好为两种结构所设计的0.53THz。太赫兹波的高频部分,尤其是高于1THz的部分发生了急剧地衰减。随着大样品中圆孔数量的增加,由于更加明显的周期性,滤波峰的中心漂移到0.26THz。使用表面等离子体激元(SPPs)的相关理论以及运用有限元算法(FEM)对实验中观察到的超常光学透射现象和滤波效应进行模拟和分析,模拟的结果与实验数据吻合得非常好。
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| 关 键 词： | 太赫兹滤波器 超常光学透射 有限元算法 表面等离子体激元 |
| 收稿时间： | 2013/6/17 0:00:00 |
Terahertz transmission properties of sub-wavelength hole array and bull＇s eye structures on aluminum slab |
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| CHEN Lin,GAO Chunmei,XU Jiaming,XIE Le and ZHU Yiming.Terahertz transmission properties of sub-wavelength hole array and bull＇s eye structures on aluminum slab[J].Optical Instruments,2013,35(6):1-6. |
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| Authors: | CHEN Lin GAO Chunmei XU Jiaming XIE Le and ZHU Yiming |
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| Affiliation: | Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China;School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China;School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China;School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China;School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China;School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China |
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| Abstract: | Terahertz(THz) filters based on extraordinary optical transmission from sub-wavelength hole array structure and bull's eye structure fabricated on aluminum slab is experimentally investigated by using THz time-domain spectroscopy (THz-TDS). The incident THz pulses with frequency from 0.1 to 2.7 THz could be observed to be filtered and the central peaks are both at 0.53 THz with designed parameters, respectively. The THz wave in high frequency could be observed to decrease dramatically, especially for the frequency above 1 THz. However, the transmission peak from the big sample with more holes shifts to low frequency at 0.26 THz due to the extension of periodical holes. Furthermore, finite element method (FEM) is employed to analyze this extraordinary optical transmission and filter phenomena with surface plasmon polaritons (SPPs) theory. The experimental results agree well with the simulation results. |
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| Keywords: | terahertz filters extraordinary optical transmission FEM SPPs |
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