Polarization-independent negative-index metamaterial in the near infrared
Polarization-independent negative-index metamaterial in the near infrared
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DOI：
10.1364/ol.34.000704
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发表时间：
2009-03-01
期刊：
影响因子：
3.6
通讯作者：
Pertsch, T.
中科院分区：
文献类型：
--
作者：
Helgert, C.;Menzel, C.;Pertsch, T.
我们提出了一种被称为“瑞士十字”结构的负折射率超材料的设计，并从理论和实验上进行了评估。与已建立的渔网结构相比，该设计消除了偏振相关的有效光学参数的缺陷。新的设计是利用电子束技术制造的，并使用光谱分析技术进行了实验分析。与数值模拟的比较表明，在1400 nm的工作波长下，有效折射率n=-1.9，与入射偏振无关。对系统的共振进行了全面的讨论。(C)2009年美国光学学会
We present and evaluate theoretically and experimentally a design for a negative-index metamaterial that is termed the "Swiss cross" structure. Compared with the established fishnet structure, the proposed design eliminates the drawback of polarization-dependent effective optical parameters. The new design is fabricated by means of e-beam technology and experimentally analyzed using spectroscopic techniques. The thorough comparison with numerical simulations reveals an effective refractive index of n=-1.9 at an operational wavelength of 1400 nm that is independent of the incident polarization. The resonances of the system are comprehensively discussed. (C) 2009 Optical Society of America