Analog of electromagnetically induced transparency based on asymmetric nickel-ferrite metamaterials in THz regime

The electromagnetically induced transparency-like characteristics of asymmetric nickel-ferrite metamaterials through near-field coupling are investigated in the terahertz regime. The nickel-ferrite metamaterial consists of a cut wire resonator on the front side and a disk resonator at the back of th...

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Bibliographic Details
Published inAIP advances Vol. 13; no. 7; pp. 075206 - 075206-7
Main Authors Kim, Tae-Han, Yoo, Young Joon, Park, Sang Yoon, Lee, Bo Wha
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 01.07.2023
AIP Publishing LLC
Subjects
Asymmetry
Coupling
Ferrites
Finite difference method
Metamaterials
Nickel
Resonators
Substrates
Terahertz frequencies
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Summary:The electromagnetically induced transparency-like characteristics of asymmetric nickel-ferrite metamaterials through near-field coupling are investigated in the terahertz regime. The nickel-ferrite metamaterial consists of a cut wire resonator on the front side and a disk resonator at the back of the quartz substrate. The analog of electromagnetically induced transparency is characterized by employing a finite difference frequency domain technique. By designing the nickel-ferrite metamaterial to overcome Snoek’s limitation of ferrite materials in the THz spectral region, electromagnetically induced transparency-like spectral features with a high quality factor and slow-light effect are achieved. These results may provide an important way to understand the coupling mechanism and ferrite material application in slow-light devices, THz sensors, and tunable switching in THz frequency bands.
ISSN:2158-3226
2158-3226
DOI:10.1063/5.0146706