Magnetic Fano resonance in silicon concentric nanoring resonator dimers under azimuthally polarized beam excitation

Zhou, Xin; Lai, Meiqin; Zhang, Di; Deng, Fu; Xiang, Jin; Luo, Lin; Lai, Daoning; Wen, Weikun; Fan, Haihua; Dai, Qiao-Feng; Liu, Haiying

doi:10.1016/j.optcom.2018.07.046

Cited by 2 publications

(1 citation statement)

References 50 publications

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“…The resonant behavior of the incident light in high index dielectric nanoparticles can excite the mode similar to metal nanoparticles, [20] reproduce many subwavelength effects demonstrated in the plasma due to the localization of the electric field, but without great losses or energy dissipation into heat. [21] In addition, the dielectric metamaterial unit can support electrical and magnetic dipole response due to Mie resonance, and the coexistence of strong electromagnetic and multipole resonances, their interference and the resonance enhancement of magnetic fields in dielectric nanoparticles can produce rich applications. [22][23][24][25] More significantly, the electromagnetic oscillation of dielectric nanoparticles is positively correlated with the effective refractive index.…”

Section: Introductionmentioning

confidence: 99%

Broadband visible light absorber based on ultrathin semiconductor nanostructures*

Huang¹,

Li²,

Lu³

et al. 2020

Chinese Phys. B

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It is desirable to have electromagnetic wave absorbers with ultrathin structural thickness and broader spectral absorption bandwidth with numerous applications in optoelectronics. In this paper, we theoretically propose and numerically demonstrate a novel ultrathin nanostructure absorber composed of semiconductor nanoring array and a uniform gold substrate. The results show that the absorption covers the entire visible light region, achieving an average absorption rate more than 90% in a wavelength range from 300 nm to 740 nm and a nearly perfect absorption from 450 nm to 500 nm, and the polarization insensitivity performance is particularly great. The absorption performance is mainly caused by the electrical resonance and magnetic resonance of semiconductor nanoring array as well as the field coupling effects. Our designed broadband visible light absorber has wide application prospects in the fields of thermal photovoltaics and photodetectors.

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Section: Introductionmentioning

confidence: 99%

Broadband visible light absorber based on ultrathin semiconductor nanostructures*

Huang¹,

Li²,

Lu³

et al. 2020

Chinese Phys. B

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Magnetic transverse unidirectional scattering and longitudinal displacement sensing in silicon nanodimer

Zhang,

Xu,

Liu

et al. 2024

Opt. Express

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Unidirectional scattering, crucial for manipulating light at the nanoscale, has wide-ranging applications from optical manipulation to sensing. While traditionally achieved through interactions between electric multipoles or between electric and magnetic multipoles, reports on unidirectional scattering driven purely by magnetic multipoles are limited. In this study, we undertake a theoretical exploration of transverse unidirectional scattering induced by magnetic multipoles, employing tightly focused azimuthally polarized beams (APBs) in interaction with a silicon nanodimer comprising two non-concentric nanorings. Through numerical simulations and theoretical analysis, we validate the transverse unidirectional scattering, predominantly governed by magnetic dipolar and quadrupolar resonances. Moreover, the directionality of this unidirectional scattering shows a strong correlation with the longitudinal displacement of the nanodimer within a specific range, showcasing its potential for longitudinal displacement sensing. Our study advances optical scattering control in nanostructures and guides the design of on-chip longitudinal displacement sensors.

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Magnetic Fano resonance in silicon concentric nanoring resonator dimers under azimuthally polarized beam excitation

Cited by 2 publications

References 50 publications

Broadband visible light absorber based on ultrathin semiconductor nanostructures*

Broadband visible light absorber based on ultrathin semiconductor nanostructures*

Magnetic transverse unidirectional scattering and longitudinal displacement sensing in silicon nanodimer

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