Tunable ultra-high-efficiency light absorption of monolayer graphene using critical coupling with guided resonance

Abstract

We numerically demonstrate a novel monolayer graphene-based perfect absorption multi-layer photonic structure by the mechanism of critical coupling with guided resonance, in which the absorption of graphene can significantly close to 99% at telecommunication wavelengths. The highly efficient absorption and spectral selectivity can be obtained with designing structural parameters in the near infrared ranges. Compared to previous works, we achieve the complete absorption of single-atomic-layer graphene in the perfect absorber for the first time, which not only opens up new methods of enhancing the light-graphene interaction, but also makes for practical applications in high-performance optoelectronic devices, such as modulators and sensors.

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Cited by in corpus (8)

• Controlling light absorption of graphene at critical coupling through magnetic dipole quasi-bound states in the continuum resonance
• Tunable anisotropic perfect absorption in hyperbolic metamaterials based on black phosphorous/dielectric multilayer structures
• Independently tunable dual-spectral electromagnetically induced transparency in a terahertz metal-graphene metamaterial
• Black phosphorus-based anisotropic absorption structure in the mid-infrared
• Tailoring anisotropic absorption in borophene-based structure via critical coupling
• Approaching perfect absorption of monolayer molybdenum disulfide at visible wavelengths using critical coupling
• Engineering light absorption at critical coupling via bound states in the continuum
• Gain-assisted critical coupling for enhanced optical absorption in graphene