Multi-mode resonance properties of two-dimensional metal-dielectric-metal fishnet metasurface at visible wavelengths

Ren, Yuan; Lu, Yonghua; Zang, Tianyang; Wang, Yong; Dai, Yanqiu; Wang, Pei

doi:10.1364/oe.25.028417

Cited by 13 publications

(9 citation statements)

References 30 publications

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“…The optical behavior of blue shift (in Fig. 10a) is consistent with what is predicted by the effective LC circuit model (Ren et al 2017), as the product of L and C is inversely proportional to H 2 0 . From a more general point of view, since electric field of plasmonic mode is mainly concentrated in the LN spacer layer, it is more difficult for the upper and lower silver layers to be coupled as the LN spacer layer becomes thicker.…”

Section: Optimizations Of G 0 In 2d Hybrid Plasmonicphononic Crystal Cavitysupporting

confidence: 84%

“…For plasmonic mode, obvious red shift of resonant wavelength λ 0 can be observed as the radius of central air hole is over 0.4a, which indicates that it is dependent on the aspect ratio of the in-plane (xy plane) silver structure perforated by air. Such a phenomenon may be explained by the effective LC circuit mode (Ren et al 2017), in which a capacitor and an inductor are formed by the upper silver/LN/lower silver layers, the effective capacitance between such two parallel silver layers is written as…”

Section: Optimizations Of G 0 In 2d Hybrid Plasmonicphononic Crystal Cavitymentioning

confidence: 99%

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Hybrid plasmonic–phononic cavity design for enhanced optomechanical coupling in lithium niobate

Liu

Bibbò

et al. 2020

Appl Nanosci

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A hybrid plasmonic-phononic cavity design which enables high vacuum coupling rate has been proposed in lithium niobate (LN) phononic crystals (Phncs) that have been perforated by air holes and coated with thin silver film. By tailoring the geometry, optomechanical interaction between the plasmonic modes (produced by the metal/insulator) and the phononic modes (confined by the phononic bandgap effect) is greatly enhanced. Numerical results based on finite-element method (FEM) reveal that in this hybrid plasmonic-phononic design, high vacuum coupling rate that predominantly contributed by moving boundary effect is on the order of 10 6 Hz, which is about one to two orders higher than that contributed by photoelastic effect shown in conventional phoxonic crystal designs. Results evidence how the vacuum coupling rate depends on geometrical parameters like the radius of the defect air hole, the thickness of silver layer, and LN layer. The simultaneous confinement and strong coupling, combined with other advantages as lack of constraint to the refractive index, and integration of piezoelectric material and metal in a chip, this hybrid design may be suitable for non-invasive biological sensing, optomechanically tunable plasmonic heater for drug release and lab-on-chip devices.

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Section: Optimizations Of G 0 In 2d Hybrid Plasmonicphononic Crystal Cavitysupporting

confidence: 84%

Section: Optimizations Of G 0 In 2d Hybrid Plasmonicphononic Crystal Cavitymentioning

confidence: 99%

Hybrid plasmonic–phononic cavity design for enhanced optomechanical coupling in lithium niobate

Liu

Bibbò

et al. 2020

Appl Nanosci

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“…2 (f) and (g)). More importantly, the electromagnetic field of the excitation laser has been concentrated efficiently on the subwavelength dielectric gap because of the LSP, and the main lobes of the localized electric field are bounded at the edges along the polarization directions [37]. FIG.…”

Section: Double Enhancement For Fluorescent Emissionmentioning

confidence: 99%

Fluorescence emission mediated by metal-dielectric-metal fishnet metasurface: Spatially selective excitation and double enhancement

Ren

Zang

et al. 2019

Chinese Journal of Chemical Physics

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Enhancement of fluorescent radiation is of great importance for applications including biological imaging, high-sensitivity detectors, and integrated light sources. Strong electromagnetic fields can be created around metallic nanoparticles or in gap of nanostructures, where the local state density of radiating mode is then dramatically enhanced. While enhanced fluorescent emission has been demonstrated in many metallic nanoparticles and nanoparticle pairs, simultaneous mediation of absorption and emission processes of fluorescent emitters remains challenging in metallic nanostructures. Here, we investigate fluorescent emission mediated by metal-dielectric-metal fishnet metasurface, in which localized surface plasmon (LSP) and magnetic plasmon polaritons (MPPs) modes are coupled with absorption and emission processes, respectively. For absorption process, coupling of the LSP mode enables spatially-selective excitation of the fluorescent emitters by rotating the polarization of the pump laser beam. In addition, the polarization-dependent MPP mode enables manipulation of both polarization and wavelength of the fluorescent emission by introducing a rectangular fishnet structure. All the experimental observations are further corroborated by finite-difference time-domain simulations. The structure reported here has great potential for application to color light-emitting devices and nanoscale integrated light sources.

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“…Multi-band MTS has attracted an enormous attention from the scientific community for improving the communication quality and integrating several applications into a single device, thereby, reducing the cost. Multi-band resonator [22,23] and multimode MTS [24][25][26][27][28][29] are proposed to realize multi-band MTS characteristics. However, the design of a multi-band PGMS based high gain antenna poses a huge challenge.…”

Section: Introductionmentioning

confidence: 99%

Polarization Sensitive Dual-Band Metasurface Lens for X-Band Applications

Kumar¹,

Ghosh²

2021

PIER M

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This paper presents a dual-band polarization dependent phase gradient metasurface (PGMS) lens based on phase compensation method. The proposed metasurface (MTS) consists of a multi-layered unitcell with elliptical structures encircled by a square loop. Owing to the elliptical shape, the unitcell produces an independent phase control for different polarizations of incident wave at two operating frequencies. The present work is aimed to design a dual-band gain enhancement MTS lens antenna in the broadside direction at 10 GHz and 12 GHz. The proposed MTS is designed by oneto-one spatial phase mapping with major and minor axes of the elliptical unitcell at 10 and 12 GHz for xand y-polarized incident waves, respectively. The performance of the MTS is validated by placing two linearly polarized patch antennas operating at 10 GHz and 12 GHz at the focal distance. The simulation and measured results show a gain enhancement of 10 dB in the frequency range of [9.5-10.1] GHz and [11.6-12.1] GHz for xand y-polarized waves, respectively.

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Multi-mode resonance properties of two-dimensional metal-dielectric-metal fishnet metasurface at visible wavelengths

Cited by 13 publications

References 30 publications

Hybrid plasmonic–phononic cavity design for enhanced optomechanical coupling in lithium niobate

Hybrid plasmonic–phononic cavity design for enhanced optomechanical coupling in lithium niobate

Fluorescence emission mediated by metal-dielectric-metal fishnet metasurface: Spatially selective excitation and double enhancement

Polarization Sensitive Dual-Band Metasurface Lens for X-Band Applications

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