2014
DOI: 10.1364/oe.22.017762
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Wide tunability of magnetoplasmonic crystals due to excitation of multiple waveguide and plasmon modes

Abstract: Magnetoplasmonic crystals (MPC) composed of a 1D gold grating on top of a magnetic garnet layer made by a combined ion-beam etching technique are studied. We demonstrate that this method allows to make high-quality MPC. It is shown that MPC with a 30-40 nm thick perforated gold layer provides an effective excitation of two surface plasmon-polariton modes and several numbers of waveguide modes in the garnet layer. An enhancement of the transversal magneto-optical effect up to the value of 10(-2) is observed for… Show more

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Cited by 36 publications
(27 citation statements)
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“…These modes can be easily distinguished from the SPPs due to their different dispersion relations. The transmission spectra reveal Fano-type resonances, similar to those observed previously in plasmonic crystals [5,[29][30][31]34,35]. The transmission was found to be symmetric with respect to the angle of incidence θ within 3% accuracy.…”
supporting
confidence: 82%
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“…These modes can be easily distinguished from the SPPs due to their different dispersion relations. The transmission spectra reveal Fano-type resonances, similar to those observed previously in plasmonic crystals [5,[29][30][31]34,35]. The transmission was found to be symmetric with respect to the angle of incidence θ within 3% accuracy.…”
supporting
confidence: 82%
“…The system under study is similar to those used in a number of recent experiments [5,20,24,[28][29][30][31] and is known to demonstrate effective SPP excitation at both interfaces in the visible and near infrared spectral range. The measurements were performed on a nonmagnetized BTIG film, and the magnetization-induced effects were averaged over the domain structure.…”
mentioning
confidence: 99%
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“…Significant enhancement in the MO effects due to the excitation of surface plasmon-polaritons (SPPs) and waveguide modes has been achieved in structures containing magnetic dielectrics [26,27,28,29,30,31,32]. The excitation of SPPs has been shown to provide a transversal magneto-optical Kerr effect as large as 15% in magnitude [26,29] and the excitation of hybrid plasmonic-waveguide modes gives rise to the novel magneto-optical intensity effect [33] that enables light intensity modulation at the level of 25% [34].…”
Section: Introductionmentioning
confidence: 99%
“…In such a structure, surface plasmon polaritons are exited through light diffraction on the metal grating, while the excitation conditions can be modulated by magnetization of the dielectric layer. A number of experimental works have shown the MPC operation performance to be of high quality [1][2][3][4][5][6]. Moreover, under a proper design, MPCs can also support resonant excitation of waveguide modes (WGs) that may be tuned by the magnetic field as well [1,4,7].…”
mentioning
confidence: 99%