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Remarkably high-Q resonant nanostructures based on atomically thin two-dimensional materials

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Abstract

Planar optical resonant structures with high quality (Q) factors play a crucial role in modern photonic technologies. In this paper, a type of remarkably high-Q resonant nanostructure based on atomically thin two-dimensional (2D) materials is proposed. It is shown theoretically and numerically that with the excitation of leaky modes in the proposed structures, guided mode resonant (GMR) gratings, can achieve resonances with extremely narrow linewidths down to 0.0005 nm and high Q-factors up to millions in the telecom range. The thickness of 2D materials and thus the high-Q resonances can be precisely controlled by changing the layer number of 2D materials, providing a versatile platform for strong light–matter interactions. As an example, dramatic nonlinear reflectance can be realized around the resonance at a power level of a few kW cm−2 with the Kerr effect. This new type of 2D material resonant nanostructure can be employed for a variety of applications ranging from lasers, filters and polarizers to nonlinear optical devices.

Graphical abstract: Remarkably high-Q resonant nanostructures based on atomically thin two-dimensional materials

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Publication details

The article was received on 21 Jul 2019, accepted on 10 Sep 2019 and first published on 10 Sep 2019


Article type: Paper
DOI: 10.1039/C9NR06192D
Nanoscale, 2019, Advance Article

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    Remarkably high-Q resonant nanostructures based on atomically thin two-dimensional materials

    Q. Hong, X. Chen, J. Zhang, Z. Zhu, S. Qin and X. Yuan, Nanoscale, 2019, Advance Article , DOI: 10.1039/C9NR06192D

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