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

Optics Express
Xiaoyun JiangLe Cheng

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 reach 99% at telecommunication wavelengths. The highly efficient absorption and spectral selectivity can be obtained with designing structural parameters in the near-infrared region. Compared to previous works, we achieve the complete absorption of single-atomic-layer graphene in the perfect absorber with a lossless dielectric Bragg mirror, 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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Citations

Jul 20, 2018·Chemical Society Reviews·Victor W BrarDeep Jariwala
May 3, 2018·Optics Express·Gui-Dong LiuLing-Ling Wang
Nov 7, 2019·Optics Express·Tingting LiuShuyuan Xiao
Feb 27, 2021·Nanotechnology·Tingting LiuShuyuan Xiao

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