Electromagnetically induced transparency in sinusoidal modulated ring resonator
Electromagnetically induced transparency in sinusoidal modulated ring resonator
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DOI：
10.1063/1.5029307
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发表时间：
2018-06
影响因子：
4
通讯作者：
Dr. Jagannath Malik;Sai Kiran Oruganti;Seongkyu Song;Nak-Young Ko;F. Bien
中科院分区：
文献类型：
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作者：
Dr. Jagannath Malik;Sai Kiran Oruganti;Seongkyu Song;Nak-Young Ko;F. Bien
在目前的工作中，我们演示了控制的激发亮模式（连续模式）的谐振和暗模式（离散模式）的谐振在一个平面metasurface内的正弦调制放置在一个电介质基板上的封闭的矩形金属环。与在常规超材料中实现暗模式响应的元原子（通常称为单位晶胞）的不对称断裂不同，在本结构中，使用偶数或奇数半周期调制来实现亮或暗模式谐振。所实现的暗模式示出了一个尖锐的共振的入射电场的特定偏振，这导致在电磁感应透明的光谱。所提出的元原子的电磁行为已经在频域中使用商业上可用的软件进行了研究，并通过实验在千兆赫范围内进行了验证。我们演示了控制亮模的激发（连续模式）共振和暗模式（离散模式）在放置在电介质衬底上的闭合矩形金属环内由正弦调制制成的平面超颖表面中的谐振。与在常规超材料中实现暗模式响应的元原子（通常称为单位晶胞）的不对称断裂不同，在本结构中，使用偶数或奇数半周期调制来实现亮或暗模式谐振。所实现的暗模式示出了一个尖锐的共振的入射电场的特定偏振，这导致在电磁感应透明的光谱。所提出的元原子的电磁行为已经在频域中使用商业上可用的软件进行了研究，并通过实验在千兆赫制度进行了验证。
In the present work, we demonstrate controlling the excitation of bright mode (continuum mode) resonance and dark mode (discrete mode) resonance in a planar metasurface made of sinusoidal modulation inside a closed rectangular metallic ring placed over a dielectric substrate. Unlike asymmetrical breaking of a meta-atom (often referred to as the unit cell) to achieve the dark mode response in regular metamaterials, in the present structure, the bright or dark mode resonance is achieved using even or odd half cycle modulation. The achieved dark-mode shows a sharp resonance for a particular polarization of the incident electric field, which results in an electromagnetically induced transparency like spectrum. The electromagnetic behavior of the proposed meta-atom has been investigated in the frequency domain using commercially available software and validated through experiments in the gigahertz regime.In the present work, we demonstrate controlling the excitation of bright mode (continuum mode) resonance and dark mode (discrete mode) resonance in a planar metasurface made of sinusoidal modulation inside a closed rectangular metallic ring placed over a dielectric substrate. Unlike asymmetrical breaking of a meta-atom (often referred to as the unit cell) to achieve the dark mode response in regular metamaterials, in the present structure, the bright or dark mode resonance is achieved using even or odd half cycle modulation. The achieved dark-mode shows a sharp resonance for a particular polarization of the incident electric field, which results in an electromagnetically induced transparency like spectrum. The electromagnetic behavior of the proposed meta-atom has been investigated in the frequency domain using commercially available software and validated through experiments in the gigahertz regime.