Rainbow Trapping with Long Oscillation Lifetimes in Gradient Magnetoinductive Metasurfaces

Xu, Zhixia; Shi, Jun; Davis, R. J.; Yin, Xiaoxing; Sievenpiper, Daniel F.

doi:10.1103/physrevapplied.12.024043

Cited by 30 publications

(15 citation statements)

References 58 publications

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“…Different from the previous works for the trapped rainbow effect, our system obtains strong magnetic field enhancement rather than electric field enhancement mentioned in Refs. ( [14][15][16][17][18]28]). The field enhancement corresponds to the accumulation of magnetostatic-like energy which occurs at the metal surface.…”

Section: Trapping Magnetic Rainbow By Using One-way Magnetostatic-likmentioning

confidence: 99%

Trapping a magnetic rainbow by using a one-way magnetostatic-like mode

Shen

Min

et al. 2019

Opt. Mater. Express

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Trapped rainbow effects have been realized in many systems while they are all characterized by electric-field enhancement. The trapped rainbow with strong magnetic-field enhancement has yet to be studied. Here, we achieve the trapped magnetic rainbow effect in a novel metal-air-YIG (yttrium-iron-garnet)-metal (MAYM) waveguide applied with a continuously decreasing magnetic field. The proposed system supports a one-way propagation feature, leading to the suppressed reflection. We systemically analyze the dispersion and the modal properties, showing the transition from the SMP (surface magnetoplasmon)-like mode to magnetostatic-like mode and the change of the group velocity when decreasing the external magnetic field along the propagation direction of the wave. We obtain the trapped magnetic rainbow effects as well as magnetic hotspots both in frequency-and time-domain simulations. The trapped rainbow effect with strong magnetic field enhancement paves a promising way for many applications including magnetic sensing to magnetic non-linearity.

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Section: Trapping Magnetic Rainbow By Using One-way Magnetostatic-likmentioning

confidence: 99%

Trapping a magnetic rainbow by using a one-way magnetostatic-like mode

Shen

Min

et al. 2019

Opt. Mater. Express

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“…The appearance of rainbow trapping offers a novel technique for frequency routing of slow light [1]. After the formation of the first theoretical work, many successive methods were presented to realize rainbow trapping, such as metamaterials [1,2], metasurfaces [3], plasmonic structures [4][5][6], phononic crystals in one-dimensional (1D) [7] and two-dimensional (2D) [8], and photonic crystals (PCs), in 1D [9], 2D [10,11] and three-dimensional (3D) [12]. Most of the mentioned methods depend on either metallic or dielectric materials.…”

Section: Introductionmentioning

confidence: 99%

Bidirectional Rainbow Trapping in 1-D Chirped Topological Photonic Crystal

Elshahat

2022

Front. Phys.

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The rainbow trapping effect has attracted gathering attention due to its potential application in data processing, energy storage, and light-matter interaction enhancement. The interest has increased recently with the advent of topological photonic crystals (PCs), as the topological PC affords a robust platform for nanophotonic devices. We proposed a chirped one-dimensional (1D) PC as a sandwiched trapped between two1D topological PCs to realize two topological edge states (TESs) for topological protection and trap the formed rainbow. Through graded the thickness of dielectric layers of the chirped 1D PC, light of different wavelengths components localizes and stores at different spatial positions leading to rainbow trapping formation. Unidirectional rainbow trapping can be observed by progressively increasing the thicknesses of the chirped PC. Nonetheless, changing increasingly one of its thicknesses and solidifying the other leads to bidirectional rainbow trapping. Achieving bidirectional rainbow trapping will reduce the footprint of nanophotonic devices in the future. This work brings inspiration to the realization of the rainbow trapping effect and provides a way to design topological nanophotonic devices.

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“…Metasurfaces are artificially engineered surfaces composed of unit cells on a subwavelength scale, which can manipulate the amplitude, phase, and polarization of waves . With the emergence of two-dimensional (2D) materials, artificial metasurfaces supporting bosonic transport (photons and phonons) have proven a valuable tool to mimic the behavior of electrons on 2D materials with the size scales amenable to laboratory fabrication. , Besides metasurfaces working at resonant states, various other theories of operation and potential applications have been proposed. In the past decade, there has been an explosive growth in the study of metasurfaces for modulating spatial waves. , Using both space and time modulation techniques, , imagers and communication systems , can be realized.…”

Section: Introductionmentioning

confidence: 99%

Line Waves Existing at Junctions of Dual-Impedance Metasurfaces

Chang

Fang

et al. 2021

ACS Photonics

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Line waves (LWs) are special electromagnetic modes supported on junctions of different metasurfaces that enforce a duality condition, such as capacitive and inductive metasurfaces. These edge modes are tightly confined to the interface and can propagate along arbitrary one-dimensional paths with high efficiency. Such attractive characteristics show potential applications for robust waveguides. Here, we introduce a compact dual-impedance metasurface platform to explore the properties of LWs. We explore intrinsic properties of LWs including dispersion, confinement, and spin-momentum locking. It is found that broadband LWs can be supported by metasurfaces with varied surface wave momentum, and the dispersion of LWs can be tailored by tuning either their capacitive or inductive properties. The equivalent impedances of metasurfaces are extracted to establish a simplified semianalytical model to study their spin-momentum locking properties. Unidirectional propagation can be excited via a chiral point source placed near the junction. We further implement a parallel plate waveguide consisting of four metasurfaces arranged with a duality symmetry. Experiments validate the analysis and indicate the existence of highly robust transmissions even when the waveguide is longitudinally warped, providing an enticing option for applying LWs in the field of wearable wireless channels and flexible electronics.

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Rainbow Trapping with Long Oscillation Lifetimes in Gradient Magnetoinductive Metasurfaces

Cited by 30 publications

References 58 publications

Trapping a magnetic rainbow by using a one-way magnetostatic-like mode

Trapping a magnetic rainbow by using a one-way magnetostatic-like mode

Bidirectional Rainbow Trapping in 1-D Chirped Topological Photonic Crystal

Line Waves Existing at Junctions of Dual-Impedance Metasurfaces

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