Plasmon-induced transparency in borophene waveguide with strong absorption inhibition at critical-coupled state

Ma, Rui; Zhang, Lian-Gang; Liu, Guidong; Wang, Lingling; Lin, Qi

doi:10.35848/1882-0786/ac4c46

Cited by 6 publications

(3 citation statements)

References 31 publications

(36 reference statements)

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“…In order to obtain the polarization independent perfect absorption, it is necessary to start the simulation study with the absorption of monolayer borophene. Here, the Fresnel coefficients of the stimulated monolayer borophene structure can be obtained from temporal coupled mode theory (CMT) [32]:…”

Section: Absorption Of Monolayer Borophenementioning

confidence: 99%

Polarization independent perfect absorption of borophene metamaterials operating in the communication band

Xiang,

Sun,

Wang

et al. 2024

Phys. Scr.

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Two-dimensional (2D) materials, such as graphene and black phosphorus, support deeply confined and tunable plasmons, making them suitable for designing absorbers with ultra-compact size and flexible manipulation. However, the operating frequency of such plasmonic absorbers is difficult to control to the communication band. Here, we propose a metamaterials composed of a borophene array, a dielectric layer and a metal reflector to achieve an optical perfect absorber near the communication wavelength of 1550 nm. In order to overcome the polarization sensitivity caused by anisotropic borophene materials, another borophene layer is introduced to achieve a polarization independent absorber, which can be attributed to the fact that the energy of the electromagnetic field is transferred between two borophene arrays as the polarization angle changes. In addition, by modifying the carrier density, the resonance wavelength of the absorber can be adjusted to 1330 nm, that is, the second communication window. This work may provide some theoretical support for the design of polarization independent devices.

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Section: Absorption Of Monolayer Borophenementioning

confidence: 99%

Polarization independent perfect absorption of borophene metamaterials operating in the communication band

Xiang,

Sun,

Wang

et al. 2024

Phys. Scr.

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“…The carrier densities of borophene are extremely high (∼10 19 m −2 ) compared to doped graphene (10 16 ∼ 10 18 m −2 ). As a result, the borophene PIT optical response can be realized at the near-infrared optical communication band [29,30].…”

Section: Introductionmentioning

confidence: 99%

Tunable narrow transparency windows induced by the coupled quasi-guided modes in borophene plasmonic nanostructure

Long

Zhang

Wang

et al. 2022

J. Phys. D: Appl. Phys.

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A grating-assisted triple-layer continuous borophene sheets structure is presented to investigate the phase-coupled plasmonic induced transparency effect at the near-infrared communication band. In the proposed structure, the diffraction grating is utilized to couple the normal incident waves, which excites the quasi-guided mode in triple-layer continuous borophene sheets. Compared to the patterned structure, the requirement of complicated processing techniques and extra doping configurations for the tuning of carrier density can be avoided by using the continuous borophene sheet. Additionally, the narrower transparency windows are shown in the spectral responses via the phase coupling between two detuned quasi-guided modes with high quality factors. The transparency windows can be efficiently tuned by adjusting the carrier densities in borophene sheets or the separation distances between the borophene sheets. The analytical results based on temporal coupled mode theory and transfer matrix method are consistent with the numerical simulations via finite-difference time-domain calculations. The proposed scheme provides the promising design of a tunable plasmon-induced transparency component that is compatible with optical communication technology.

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“…The discovery of a series of new materials, such as graphene, black phosphorus and borophene, have overcome this issue. [18][19][20][21][22][23] The absorption wavelength of the perfect absorber can be dynamically tuned without reoptimizing the geometric parameters of the structure by adjusting its Fermi energy 24) via introducing graphene into the perfect absorber. [25][26][27][28][29][30] Most recently, bulk Dirac semimetals (BDS) have attracted great interest among researchers.…”

mentioning

confidence: 99%

Tunable mid-infrared ultra-narrowband plasmonic absorber and sensor based on bulk Dirac semimetal metamaterials

Wang

Huang

et al. 2022

Jpn. J. Appl. Phys.

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We propose a tunable mid-infrared ultra-narrowband plasmonic absorber and sensor based on bulk Dirac semimetal metamaterials, which is hypersensitive to the varation of background refractive index. Based on the tunable characteristic of bulk Dirac semimetal, the absorption wavelength can be dynamically adjusted without re-optimizing the geometric parameters, meanwhile, perfect absorption can be maintained despite the equal scale variation of the structure. The absorption bandwidth is so tiny that the sensitivity and figure of merit can be up to 16000 nm/RIU and 3500/RIU, respectively. Our results may open up new avenues for the design of optical filter and bio-chemical sensing.

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Plasmon-induced transparency in borophene waveguide with strong absorption inhibition at critical-coupled state

Cited by 6 publications

References 31 publications

Polarization independent perfect absorption of borophene metamaterials operating in the communication band

Polarization independent perfect absorption of borophene metamaterials operating in the communication band

Tunable narrow transparency windows induced by the coupled quasi-guided modes in borophene plasmonic nanostructure

Tunable mid-infrared ultra-narrowband plasmonic absorber and sensor based on bulk Dirac semimetal metamaterials

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