Tunable Fano resonance and magneto-optical response in magnetoplasmonic structure fabricated by pure ferromagnetic metals

Chen, Leyi; Gao, Jian; Xia, Wei; Zhang, Shaoyin; Tang, Shujie; Zhang, Weiyi; Li, Daoyong; Wu, Xiaoshan; Du, Youwei

doi:10.1103/physrevb.93.214411

Cited by 29 publications

(25 citation statements)

References 49 publications

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“…Electric-field modulation of the Fano resonance was also demonstrated for gold nanowire gratings [22] and silicon nanohole arrays [23] integrated with liquid crystals. The Fano resonances tunable by the angle of incidence of exciting light have been demonstrated for a Si nanostripe [24], arrays of tilted aluminum nanowires [25], and Ni nanodisk arrays on a Co film [26]. In spite of the efforts devoted so far, the dynamical tuning of the Fano resonance still remains a challenging task.…”

Section: Introductionmentioning

confidence: 99%

Polarization effects in light-tunable Fano resonance in metal-dielectric multilayer structures

et al. 2017

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A planar metal-dielectric multilayer structure containing a waveguide layer doped with azo-dye molecules exhibits a sharp Fano resonance that can be shifted by pump light irradiation owing to a photoinduced change of the refractive index of the waveguide layer by photoisomerization of the azo-dye molecules. Azo-dye-containing materials are polarization sensitive and the photoinduced shift of the Fano resonance is expected to depend on the pump polarization. Previous pump-probe attenuated-total-reflection measurements performed with a normal incidence of pump light exhibited intriguingly no dependence on the pump polarization. In this work, we extend our measurements to an oblique incidence, to optimize the overlap between the pump and probe polarizations, and we demonstrate a strong dependence on the pump polarization. To analyze the experimental results for both the normal and oblique pump conditions, we introduce phenomenological equations, based on the angular hole burning model of the photoisomerization of the azo-dye molecules. The equations allow us to describe the dependence of the refractive index changes in the waveguide layer on the pump angle and polarization. Using the equations, we could obtain good theoretical fits to the experimental data. The results of fitting suggest that the overlap between the pump and probe polarizations plays an important role in determining the amount of the photoinduced shift of the Fano resonance.

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Section: Introductionmentioning

confidence: 99%

Polarization effects in light-tunable Fano resonance in metal-dielectric multilayer structures

et al. 2017

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“…Hence, it is difficult to achieve ferromagnetic and plasmonic behaviors in the same material. Only recently, nanostructures of Ni [14][15][16][17][18][19][20] Ni/Co [21] and permalloy antidots [22] have been reported to exhibit surface plasmons in combination with their well-known ferromagnetic character at room temperature. However, the intensity of the plasmonic resonance in these type of materials is fairly weaker than for noble metals as Au or Ag where the electromagnetic field can be increased locally up to 80 times upon excitation of surface plasmons [23].…”

Section: Introductionmentioning

confidence: 99%

Plasmonic nanodevice with magnetic funcionalities: fabrication and characterization

Gálvez

Valle

Gómez

et al. 2016

Opt. Mater. Express

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Abstract:We have designed and fabricated a nanodevice exhibiting simultaneously ferromagnetic properties of nanostructures with plasmonic properties of continuous films. Our device consists in an array of nanomagnets on top of a continuous plasmonic film. The patterned nanomagnets magnetic state is single domain and well-defined shape anisotropy. Despite the presence of the patterned media on top of the Au film, the system exhibit surface plasmon resonance characteristic of a continuous film, i. e., propagating surface plasmonpolaritons.

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“…The design proposed allows the optimization of the trade-off between the enhancement of magneto-optical effects and plasmonic dissipation, and, although nickel filling factor was ~6% of the total surface of the metamaterial, the magneto-optically induced polarization rotation is equal to that of a continuous nickel film. Finally, Chen et al [149,150] have recently reported the interesting possibility to couple SLRs and PSPs in the same system by using a pure ferromagnetic magneto-plasmonic crystal consisting of two-dimensional ordered Ni nano-disks array on Co film (see Fig. 4).…”

Section: Far-field Diffractive Coupling In Magneto-plasmonic Crystalsmentioning

confidence: 99%

Coupling phenomena and collective effects in resonant meta-atoms supporting both plasmonic and (opto-)magnetic functionalities: an overview on properties and applications [Invited]

Maccaferri¹

2019

J. Opt. Soc. Am. B

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We review both the fundamental aspects and the applications of functional magneto-optic and opto-magnetic metamaterials displaying collective and coupling effects on the nanoscale, where the concepts of optics and magnetism merge to produce unconventional phenomena. The use of magnetic materials instead of the usual noble metals allows for an additional degree of freedom for the control of electromagnetic field properties, as well as it allows light to interact with the spins of the electrons and to actively manipulate the magnetic properties of such nanomaterials. In this context, we explore the concepts of near-field coupling of plasmon modes in magnetic meta-molecules, as well as the effect of excitation of surface lattice resonances in magneto-plasmonic crystals. Moreover, we discuss how these coupling effects can be exploited to artificially enhance optical magnetism in plasmonic meta-molecules and crystals. Finally, we highlight some of the present challenges and provide a perspective on future directions of the research towards photon-driven fast and efficient nanotechnologies bridging magnetism and optics beyond current limits.

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Tunable Fano resonance and magneto-optical response in magnetoplasmonic structure fabricated by pure ferromagnetic metals

Cited by 29 publications

References 49 publications

Polarization effects in light-tunable Fano resonance in metal-dielectric multilayer structures

Polarization effects in light-tunable Fano resonance in metal-dielectric multilayer structures

Plasmonic nanodevice with magnetic funcionalities: fabrication and characterization

Coupling phenomena and collective effects in resonant meta-atoms supporting both plasmonic and (opto-)magnetic functionalities: an overview on properties and applications [Invited]

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