Journal
NANOSCALE RESEARCH LETTERS
Volume 14, Issue 1, Pages -Publisher
SPRINGEROPEN
DOI: 10.1186/s11671-019-3233-2
Keywords
Metamaterials; Graphene; Reflection modulation; Magnetic resonance
Funding
- National Natural Science Foundation of China (NSFC) [11974188, 11704183, 61405134, 61340007, 11304159, 11104136]
- PAPD
- NSFJS [BK20161512]
- NSFZJ [LY14A040004]
- China Postdoctoral Science Foundation [2018 M632345]
- Qing Lan Project of Jiangsu Province
- State Key Laboratory of Millimeter Waves [K201821]
- NUPTSF [NY218022, NY217045]
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Designing powerful electromagnetic wave modulators is required for the advancement of optical communication technology. In this work, we study how to efficiently modulate the amplitude of electromagnetic waves in near-infrared region, by the interactions between the interband transition of graphene and the magnetic dipole resonance in metamaterials. The reflection spectra of metamaterials could be significantly reduced in the wavelength range below the interband transition, because the enhanced electromagnetic fields from the magnetic dipole resonance greatly increase the light absorption in graphene. The maximum modulation depth of reflection spectra can reach to about 40% near the resonance wavelength of magnetic dipole, for the interband transition to approach the magnetic dipole resonance, when an external voltage is applied to change the Fermi energy of graphene.
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