Anisotropic Babinet-invertible metasurfaces to realize transmission-reflection switching for orthogonal polarizations of light
Anisotropic Babinet-invertible metasurfaces to realize transmission-reflection switching for orthogonal polarizations of light
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DOI：
10.1103/physrevapplied.6.044022
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发表时间：
2016-10
期刊：
影响因子：
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通讯作者：
Y. Nakata;Y. Urade;K. Okimura;T. Nakanishi;F. Miyamaru;M. Takeda;M. Kitano
中科院分区：
文献类型：
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作者：
Y. Nakata;Y. Urade;K. Okimura;T. Nakanishi;F. Miyamaru;M. Takeda;M. Kitano
当棋盘互连点的局部电导率发生变化时，极薄金属棋盘的电磁特性从谐振反射（透射）急剧变化到谐振透射（反射）。到目前为止，这种临界过渡的超颖表面已被应用，只有当他们有4重旋转对称性，和他们的应用程序的偏振控制，这需要各向异性，一直未被探索。为了克服这种适用性的限制，并开辟新的途径，通过利用棋盘状超颖表面的临界过渡的动态深亚波长偏振控制，我们引入了一个通用的各向异性巴比特可逆超颖表面类，使每个正交偏振波的透射-反射开关。作为各向异性巴比特可逆超颖表面的应用，我们在实验上实现了透射轴可动态旋转90 °的可重构太赫兹偏振器。
The electromagnetic properties of an extremely thin metallic checkerboard drastically change from resonant reflection (transmission) to resonant transmission (reflection) when the local electrical conductivity at the interconnection points of the checkerboard is switched. To date, such critical transitions of metasurfaces have been applied only when they have 4-fold rotational symmetry, and their application to polarization control, which requires anisotropy, has been unexplored. To overcome this applicability limitation and open up new pathways for dynamic deep-subwavelength polarization control by utilizing critical transitions of checkerboard-like metasurfaces, we introduce a universal class of anisotropic Babinet-invertible metasurfaces enabling transmission-reflection switching for each orthogonally polarized wave. As an application of anisotropic Babinet-invertible metasurfaces, we experimentally realize a reconfigurable terahertz polarizer whose transmitting axis can be dynamically rotated by $90^\circ$.