中国光学, 2013, 6 (3): 283, 网络出版: 2013-07-01   

太赫兹波段超材料的制作、设计及应用

Fabrication, design and application of THz metamaterials
作者单位
1 中国科学院 物理研究所 北京凝聚态物理国家实验室,北京 100190
2 西北大学 光子学与光子技术研究所光电技术与功能材料国家重点实验室培育基地,陕西 西安 710069
摘要
本文从制作方法、结构设计和材料选择几方面综述了超材料在太赫兹波段的电磁响应特性和潜在应用。首先,介绍了获得不同维度、具有特异电磁响应以及结构可调超材料的各种微加工制作方法,进而分析和讨论了超材料的电磁响应特性。文中指出,结构设计可以控制超材料的电磁响应特性,如各向异性、双各向异性、偏振调制、多频响应、宽带响应、不对称透射、旋光性和超吸收等。超材料的电磁响应依赖于周围微环境的介电性质,因而可用于制作对环境敏感的传感器件。此外,电光、磁光、相变、温度敏感等功能材料的引入可以获得光场、电场、磁场、温度等主动控制的太赫兹功能器件。最后,简单介绍了超材料在太赫兹波段进一步发展所面临的机遇和挑战。
Abstract
In this paper, the electromagnetic responses and potential applications of THz metamaterials are reviewed through the focus on fabrication, unit structure design, and material selection, respectively. It describes different kinds of fabrication technologies for obtaining metamaterials with special electromagnetic responses such as magnetic resonance and reconfigurable tunability, which is helpful for further understanding of electromagnetic resonances in metamaterials. The paper analyzes the electromagnetic response characteristics in detail and points out that the unit structure design can be used to obtain desired electromagnetic characteristics, such as anisotropy, bianisotropy, polarization modulation, multiband response, broadband response, asymmetric transmission, optical activity, and perfect absorption, etc. The dependence of electromagnetic responses upon surrounding dielectrics can be used not only to control resonant frequency by a proper substrate selection, but also for sensing applications. Furthermore, the introduction of functional materials with controllable dielectric properties by external optical field, electrical field, magnetic field and temperature has the potential to achieve tunable metamaterials, which is highly desirable for THz functional devices. Finally, the opportunities and challenges for further developments of THz metamaterials are briefly introduced.

潘学聪, 姚泽瀚, 徐新龙, 汪力. 太赫兹波段超材料的制作、设计及应用[J]. 中国光学, 2013, 6(3): 283. PAN Xue-cong, YAO Ze-han, XU Xin-long, WANG Li. Fabrication, design and application of THz metamaterials[J]. Chinese Optics, 2013, 6(3): 283.

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