Ultra-compact metamaterial absorber for multiband light absorption at mid-infrared frequencies

Xiao, Dong; Tao, Keyu

doi:10.7567/apex.8.102001

Cited by 24 publications

(14 citation statements)

References 26 publications

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“…3(e)-(h) that leads to strong LCP light absorption. Compared with the achiral MIM structure, the electronic and magnetic field distributions in the proposed metasurface show similar properties in the electronic and magnetic dipole resonances [37], [38]. As shown in Fig.…”

Section: Resultsmentioning

confidence: 88%

Tunable and Reconfigurable Dual-Band Chiral Metamirror

2020

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Chiral metasurfaces have recently undergone a dramatic development, due to their important applications in optics, chemistry and biology. However, the tunability and reconfigurability of the chiral metasurfaces remain challenges. Then, we proposed an S-shaped metamirror consisting of a MIM (Au-LiNbO 3 −Au) structure with a dual-band chiral absorption in the near-infrared range. The proposed structure has two resonant wavelengths with a giant chiro-optical effect. The giant chiro-optical effect originates from the different plasmonic resonances induced by the incident circularly polarized light (CPL) with opposite spin states. By tuning the voltage and thus tuning the refractive index of the lithium niobate (LiNbO 3), chiral resonant wavelengths can be dynamically adjusted in a large range as desired. Furthermore, by tuning the refractive index of LiNbO 3 , we can move the short-wavelength resonance peak to the position of another long-wavelength resonance peak. Therefore, the chiral metamirror can be dynamically reconfigured at the position of the long-wavelength resonance peak. The work offers a further step in developing tunable and reconfigurable chirality for possible applications including reconfigurable chiral hologram, chiral-selective absorber and other chiral components in near-infrared region.

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Section: Resultsmentioning

confidence: 88%

Tunable and Reconfigurable Dual-Band Chiral Metamirror

2020

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“…The mechanism of perfect absorptions is clearly illustrated by the field distributions at the resonances. Because of the well-known metal-insulator-metal (MIM) structure [3, 32, 36–38] shown in Fig. 1, localized SPPs are stimulated to form compact magnetic resonances in each patch.…”

Section: Resultsmentioning

confidence: 99%

Coupled Resonance Enhanced Modulation for a Graphene-Loaded Metamaterial Absorber

et al. 2019

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A graphene-loaded metamaterial absorber is investigated in the mid-infrared region. The light-graphene interaction is greatly enhanced by virtue of the coupled resonance through a cross-shaped slot. The absorption peaks show a significant blueshift with increasing Fermi level, enabling a wide range of tunability for the absorber. A simple circuit model well explains and predicts this modulation behavior. Our proposal may find applications in a variety of areas such as switching, sensing, modulating, and biochemical detecting.Electronic supplementary materialThe online version of this article (10.1186/s11671-019-2852-y) contains supplementary material, which is available to authorized users.

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“…Metamaterials are composite structures made of artificial unit structures, which can realize sensing [1,2], photocatalysis [3][4][5], thermal emitters [6], infrared detection and imaging equipment [7], and other applications [8,9]. Their singular properties are derived from artificially designed microstructures, rather than determined by the composition of the materials.…”

Section: Introductionmentioning

confidence: 99%

Ultra Narrow Dual-Band Perfect Absorber Based on a Dielectric−Dielectric−Metal Three-Layer Film Material

Liu

Zhu

et al. 2021

Micromachines

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This paper proposes a perfect metamaterial absorber based on a dielectric−dielectric−metal structure, which realizes ultra-narrowband dual-band absorption in the near-infrared band. The maximum Q factor is 484. The physical mechanism that causes resonance is hybrid coupling between magnetic polaritons resonance and plasmon resonance. At the same time, the research results show that the intensity of magnetic polaritons resonance is much greater than the intensity of the plasmon resonance. By changing the structural parameters and the incident angle of the light source, it is proven that the absorber is tunable, and the working angle tolerance is 15°. In addition, the sensitivity and figure of merit when used as a refractive index sensor are also analyzed. This design provides a new idea for the design of high-Q optical devices, which can be applied to photon detection, spectral sensing, and other high-Q multispectral fields.

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Ultra-compact metamaterial absorber for multiband light absorption at mid-infrared frequencies

Cited by 24 publications

References 26 publications

Tunable and Reconfigurable Dual-Band Chiral Metamirror

Tunable and Reconfigurable Dual-Band Chiral Metamirror

Coupled Resonance Enhanced Modulation for a Graphene-Loaded Metamaterial Absorber

Ultra Narrow Dual-Band Perfect Absorber Based on a Dielectric−Dielectric−Metal Three-Layer Film Material

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