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Electro-optic tuning of split ring resonators embedded in a liquid crystal

机译:嵌入液晶的裂环谐振器的电光调谐

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摘要

Two-dimensional arrays of split ring resonators for near-infrared frequencies are embedded in a liquid crystal (LC) and the influences of LC alignment, temperature, and electric fields on the resonance frequencies are studied. The results show that tunability can not only be achieved by influencing the state of polarization of the incident radiation, but also by direct interaction of the evanescent field of the resonant modes with the LC. Depending on the LC alignment, the field-induced shift of the resonance frequency is found to vary for different excited modes. Some guidelines for the design of tunable frequency selective metasurfaces can be deduced from these experimental results.
机译:将近红外频率的裂环谐振器的二维阵列嵌入液晶(LC)中,研究了LC对准,温度和电场对谐振频率的影响。结果表明,可调谐性不仅可以通过影响入射辐射的偏振状态来实现,而且可以通过谐振模的the逝场与LC的直接相互作用来实现。取决于LC对准,发现对于不同的激发模式,共振频率的场致位移是变化的。从这些实验结果中可以得出一些设计可调谐频率选择性超颖表面的指南。

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