| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Kee, Chul-Sik
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2019Significant THz absorption in CH3NH2 molecular defect-incorporated organic-inorganic hybrid perovskite thin filmcitations
- 2018Strong polarization-dependent terahertz modulation of aligned Ag nanowires on Si substratecitations
- 2015Subwavelength localization and toroidal dipole moment of spoof surface plasmon polaritonscitations
- 2015Evolution of the surface state in Bi2Se2Te thin films during phase transition citations
- 2014Fano resonance of self-collimated beams in two-dimensional photonic crystalscitations
- 2011Frequency selective heterojunction metal-insulator-metal mirror for surface plasmonscitations
- 2006Fabrication of polymer photonic crystal slabs using nanoimprint lithographycitations
- 2005Nanopatterned polymer thin filmscitations
- 2005Photonic band gaps and defect modes of polymer photonic crystal slabscitations
- 2005Line-defect-induced bending and splitting of self-collimated beams in two-dimensional photonic crystalscitations
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article
Subwavelength localization and toroidal dipole moment of spoof surface plasmon polaritons
Abstract
We experimentally and theoretically demonstrate subwavelength scale localization of spoof surface plasmon polaritons at a point defect in a two-dimensional groove metal array. An analytical expression for dispersion relation of spoof surface plasmon polaritons substantiates the existence of a band gap where a defect mode can be introduced. A waveguide coupling method allows us to excite localized spoof surface plasmon polariton modes and measure their resonance frequencies. Numerical calculations confirm that localized modes can have a very small modal volume and a high Q factor both of which are essential in enhancing light-matter interactions. Interestingly, we find that the localized spoof surface plasmon polariton has a significant toroidal dipole moment, which is responsible for the high Q factor, as well as an electric quadrupole moment. In addition, the dispersion properties of spoof surface plasmon polaritons are analyzed using a modal expansion method and numerical calculations.