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arXiv 1904.05511physics.optics
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可见光区宽带线偏振超颖表面地毯斗篷的设计

Designing a broadband and linear polarization metasurface carpet cloak in the visible

L. Y. Hsu, A. Ndao, B. Kanté

摘要:

在过去的几年里,地毯隐身由于其在光频上的可行性和在隐身技术上的潜力而引起了人们的兴趣。由于超表面能够在亚波长尺度上操纵波阵面、偏振和相位,因此已被提议作为一种设计超薄地毯遮盖表面的方法。然而,实现具有显著带宽的宽带地毯隐身是超表面设计的关键挑战之一。迄今为止,基于超表面的宽带地毯式隐身尚未实现,并且隐身仅限于离散波长。在这里,我们提出并数值演示了一种新的超颖表面设计的宽带地毯隐身与线偏振在可见光波长从650 nm到800 nm。我们提出的方法是一个很有前途的宽带结构化接口的方法。

英文摘要:

In the past few years, carpet cloaking attracted interests because of its feasibility at optical frequencies and potential in stealth technologies. Metasurfaces have been proposed as a method to engineer ultra-thin carpet cloaking surfaces due to their abilities to manipulate wavefronts, polarization, and phase at subwavelength scale. However, achieving broadband carpet cloaking with a significant bandwidth is one of the key remaining challenges for metasurface designs. To date, broadband carpet cloaking based on metasurfaces has not been achieved and cloaking is limited to discrete wavelengths. Here, we propose and numerically demonstrate a novel metasurface design for broadband carpet cloaking with linear polarization at visible wavelengths from 650 nm to 800 nm. Our proposed method is a promising approach for broadband structured interfaces.

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