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.
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4 June 2018
Research Article|
June 06 2018
Electromagnetically induced transparency in sinusoidal modulated ring resonator
Jagannath Malik
;
Jagannath Malik
a)
Department of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology (UNIST)
, Ulsan 44919, South Korea
a)Author to whom correspondence should be addressed: bien@unist.ac.kr
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Sai Kiran Oruganti;
Sai Kiran Oruganti
Department of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology (UNIST)
, Ulsan 44919, South Korea
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Seongkyu Song;
Seongkyu Song
Department of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology (UNIST)
, Ulsan 44919, South Korea
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Nak Young Ko;
Nak Young Ko
Department of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology (UNIST)
, Ulsan 44919, South Korea
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Franklin Bien
Franklin Bien
a)
Department of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology (UNIST)
, Ulsan 44919, South Korea
a)Author to whom correspondence should be addressed: bien@unist.ac.kr
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a)Author to whom correspondence should be addressed: bien@unist.ac.kr
Appl. Phys. Lett. 112, 234102 (2018)
Article history
Received:
March 13 2018
Accepted:
May 18 2018
Citation
Jagannath Malik, Sai Kiran Oruganti, Seongkyu Song, Nak Young Ko, Franklin Bien; Electromagnetically induced transparency in sinusoidal modulated ring resonator. Appl. Phys. Lett. 4 June 2018; 112 (23): 234102. https://doi.org/10.1063/1.5029307
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