Multi-frequency polarization and electro-optical modulator based on triple plasmon- induced transparency in monolayer graphene metamaterials

Meng, Qiqi; Chen, Fang; Xu, Yiping; Cheng, Shubo; Yang, Wen-Xing; Yao, Duanzheng; Yi, Zao

doi:10.1016/j.diamond.2023.110216

Cited by 29 publications

(3 citation statements)

References 54 publications

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“…Subsequently, in October 2022, Zhou et al showcased a five-frequency switching mechanism using x-polarized light within a bilayer graphene configuration [41]. Most recently, in July 2023, Meng et al introduced a multi-frequency switching strategy using x-polarized light, integrated into a structure with four graphene strips [42]. However, real-world light sources typically emit light that is not restricted to a single polarization direction.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional terahertz device based on plasmon-induced transparency

Lei,

Nie,

et al. 2024

Phys. Scr.

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Enhancing light-matter interaction is crucial in optics for boosting nanophotonic device performance, which can be achieved via plasmon-induced transparency (PIT). In this study, a polarization-insensitive PIT effect at terahertz frequencies is achieved using a novel metasurface composed of a cross-shaped graphene structure surrounded by four graphene strips. The high symmetry of this metasurface ensures its insensitivity to changes in the polarization angle of incident light. The PIT effect, stemming from the coupling of graphene bright modes, was explored through finite difference time domain (FDTD) simulations and coupled mode theory (CMT) analysis. By tuning the Fermi level in graphene, we effectively modulated the PIT transparent window, achieving high-performance optical switching with a modulation depth (88.9% < MD < 98.0%) and insertion losses (0.17 dB < IL < 0.51 dB) at a carrier mobility of 2 m2/(V·s). Furthermore, the impact of graphene carrier mobility on the slow-light effect was examined, revealing that increasing the carrier mobility from 0.5 m2/(V·s) to 3 m2/(V·s) boosts the group index from 126 to 781. These findings highlight the potential for developing versatile terahertz devices, such as optical switches and slow-light apparatus.

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Section: Introductionmentioning

confidence: 99%

Multifunctional terahertz device based on plasmon-induced transparency

Lei,

Nie,

et al. 2024

Phys. Scr.

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“…Meng et al presented a composite structure of horizontal and vertical graphene strips. 31 The structure can generate a triple PIT effect based on the coupling of three bright modes and one dark mode.…”

Section: Introductionmentioning

confidence: 99%

A carbon nanotube metamaterial sensor showing slow light properties based on double plasmon-induced transparency

Pan,

Chen,

et al. 2024

Phys. Chem. Chem. Phys.

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“…Graphene has revealed numerous unique physical and electrical properties [19,20], including high mobility and transparent flexibility, making it suitable as an electrode [21]. Its chemical potential and Fermi level can be controlled by the gate voltage [22]. Therefore, the physical properties of the device at the metal-semiconductor interface will be regulated by the gate voltage.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric Schottky Barrier in Rubrene Transistor via Monolayer Graphene Insertion toward Self-Powered Imaging

Liu,

Zheng,

et al. 2023

Materials

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Organic semiconductor materials featuring lightweight, and flexibility may play a significant role in various future applications, such as foldable displays, wearable devices, and artificial skin. For developing high-performance organic devices, organic crystals are highly desired, while a remaining fundamental issue is their contact problem. Here, we have grown a high-quality rubrene single crystal by utilizing a simple in-air sublimation technique. The contact characteristics (barrier height and contact resistance) are detail-studied by resist-free transfer electrodes (Au metal or graphene/Au). The Schottky barrier of the rubrene/graphene interface is lower and can be also modulated by gate bias, which is confirmed by spatial photocurrent mapping. Finally, we demonstrated the zero-bias photocurrent imaging application by constructing the asymmetrical device employing different electrode contacts. Our work would be of significance for studying the contact issue of organic crystals and wireless imaging.

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Multi-frequency polarization and electro-optical modulator based on triple plasmon- induced transparency in monolayer graphene metamaterials

Cited by 29 publications

References 54 publications

Multifunctional terahertz device based on plasmon-induced transparency

Multifunctional terahertz device based on plasmon-induced transparency

A carbon nanotube metamaterial sensor showing slow light properties based on double plasmon-induced transparency

Asymmetric Schottky Barrier in Rubrene Transistor via Monolayer Graphene Insertion toward Self-Powered Imaging

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