双相干光束照明下基于双层超材料的宽带线性偏振变换器

2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI:10.1109/IRMMW-THZ.2018.8510269

W. Tan, Caihong Zhang, Hua Li, Dacheng Wang, Zheng Feng, B. Jin

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引用次数: 0

摘要

我们展示了一种具有镜面对称的双层超材料结构，它在双不对称光束照明下充当线性偏振转换器。其高带宽、高透光率和高效率的高性能源于两个干涉过程的结合:两个金属图案化层之间的法布里-帕姆罗样腔效应和空间分离的亚波长谐振腔的相干激发。太赫兹(THz)实验结果与数值模拟结果吻合良好。

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Bi-layer Metamaterial based Broadband Linear Polarization Converter under Two Coherent Beam Illumination

We demonstrate a bi-layer metamaterial structure with mirror symmetry that acts as a linear polarization converter under two-antisymmetric-beam illumination. Its high performance, including broad bandwidth, high transmittance and high efficiency, originates from the combination of two interference processes: the Fabry-Pérot-like cavity effect between two metallic patterned layers and coherent excitations of spatially separated subwavelength resonators. Terahertz (THz) experiments show good agreement with numerical simulations.

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2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

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