光学
极化(电化学)
太赫兹辐射
波前
分束器
谐振器
各向异性
物理
正交偏振光谱成像
径向极化
材料科学
光电子学
激光束质量
物理化学
化学
激光器
激光束
作者
Hongxin Zeng,Yaxin Zhang,Feng Lan,Shixiong Liang,Lan Wang,Tian‐shun Song,Ting Zhang,Zongjun Shi,Ziqiang Yang,Kaiping Xue,Xilin Zhang,Pinaki Mazumder,Daniel M. Mittleman
出处
期刊:IEEE Transactions on Terahertz Science and Technology
[Institute of Electrical and Electronics Engineers]
日期:2019-09-01
卷期号:9 (5): 491-497
被引量:33
标识
DOI:10.1109/tthz.2019.2927890
摘要
A metasurface composed of multiple resonator arrangements with a certain phase distribution is capable of efficient wavefront manipulation. An anisotropic matrix metasurface consisting of asymmetric metal cross particles with a near-field coupling-induced achieves simultaneous distinctive dualpolarization anomalous reflections. Using polarization splitting, due to the anisotropic phase gradients of the matrix subunit, the x-and-y-polarization components of the incident terahertz waves can be efficiently deflected with different deflection angles in a single plane or in orthogonal planes. Both simulated and experimental results show that the anisotropic matrix metasurface efficiently reflects the xand y-polarization components of normal incident waves in different directions at 0.32-0.42 THz with a relative bandwidth of 27%, and the maximum deflection coefficient is measured to exceed 85%. The proposed anisotropic matrix metasurface is promising for applications in high-performance terahertz polarization beam splitters, spectral splitting, directional emitters, polarization-sensitive imaging, and polarization multiplexers.
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