Journal
OPTICAL MATERIALS EXPRESS
Volume 6, Issue 8, Pages 2607-2615Publisher
OPTICAL SOC AMER
DOI: 10.1364/OME.6.002607
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Funding
- Hundreds of Talents Programs of the Chinese Academy of Sciences [J08-029]
- CAS/SAFEA International Partnership Program for Creative Research Teams
- Innovative Project of the Chinese Academy of Sciences [YYYJ-1123-4]
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A graphene-based metamaterial structure composed of multilayer graphene/dielectric stacking configuration is proposed, which achieves multiple analogue of electromagnetically induced transparencies (EIT) effect at terahertz frequencies. Using the phase-coupling scheme, a theoretical model is established to study the EIT-like effect of the proposed structure, and the theoretical calculations coincide well with the numerical simulated results. By varying the Fermi energy level of the graphene, the EIT-like windows can be dynamically tuned in a wide range of terahertz spectra. Particularly, since the symmetry of the structure, the EIT-like effect is polarization-insensitive and can be performed very well in a large incident angles, nearly 80 degrees for both transverse electric and transverse magnetic waves. The proposed structure has potential applications in tunable terahertz chip-integrated optical devices, especially for dynamic multi-band filters, sensors, modulators and nonlinear devices. (C) 2016 Optical Society of America
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