Theory of surface plasmons and surface-plasmon polaritons

Pitarke, J. M.; Silkin, Viatcheslav M.; Chulkov, Eugene V.; Echenique, Pedro M.

doi:10.1088/0034-4885/70/1/r01

Cited by 1,336 publications

(1,052 citation statements)

References 381 publications

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“…Here, ( /(1 )) n = ℜ + ε ε is the real part of the effective refractive index of the SPP, with ε being the complex-valued dielectric function of gold [9,22]. Interpolating data from Ref.…”

Section: Experimental Results and Analysismentioning

confidence: 99%

Anisotropic excitation of surface plasmon polaritons on a metal film by a scattering-type scanning near-field microscope with a non-rotationally-symmetric probe tip

et al. 2017

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Abstract:We investigated the excitation of surface plasmon polaritons on gold films with the metallized probe tip of a scattering-type scanning near-field optical microscope (s-SNOM). The emission of the polaritons from the tip, illuminated by near-infrared laser radiation, was found to be anisotropic and not circularly symmetric as expected on the basis of literature data. We furthermore identified an additional excitation channel via light that was reflected off the tip and excited the plasmon polaritons at the edge of the metal film. Our results, while obtained for a non-rotationally-symmetric type of probe tip and thus specific for this situation, indicate that when an s-SNOM is employed for the investigation of plasmonic structures, the unintentional excitation of surface waves and anisotropic surface wave propagation must be considered in order to correctly interpret the signatures of plasmon polariton generation and propagation.

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Section: Experimental Results and Analysismentioning

confidence: 99%

Anisotropic excitation of surface plasmon polaritons on a metal film by a scattering-type scanning near-field microscope with a non-rotationally-symmetric probe tip

et al. 2017

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“…Possibly, the most common approach to introduce nonlocality when studying plasmonic systems within a classical framework is the hydrodynamical model, 116,117 which considers an extra term in the dynamics of the free electron gas related to its pressure and thus, the deformation to an external perturbation. In this model, nonlocality is introduced in k-space by using a permittivity that is not only a function of frequency, but also of the wavevector k. In real space, this description corresponds to the introduction of an additional contribution to the polarization from the immediate vicinity of the non-uniform charge density, so that the polarization at each point is obtained via an integral comprising the electric elds over the surrounding region.…”

Section: Faraday Discussion Papermentioning

confidence: 99%

A classical treatment of optical tunneling in plasmonic gaps: extending the quantum corrected model to practical situations

et al. 2015

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(2015). A classical treatment of optical tunneling in plasmonic gaps: extending the quantum corrected model to practical situations. Faraday Discussions, 178, The optical response of plasmonic nanogaps is challenging to address when the separation between the two nanoparticles forming the gap is reduced to a few nanometers or even subnanometer distances. We have compared results of the plasmon response within different levels of approximation, and identified a classical local regime, a nonlocal regime and a quantum regime of interaction. For separations of a fewÅngstroms, in the quantum regime, optical tunneling can occur, strongly modifying the optics of the nanogap. We have considered a classical effective model, so called Quantum Corrected Model (QCM), that has been introduced to correctly describe the main features of optical transport in plasmonic nanogaps. The basics of this model are explained in detail, and its implementation is extended to include nonlocal effects and address practical situations involving different materials and temperatures of operation.

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“…Generally, SPs can be divided into LSPs and PSPs, and both their schematic diagrams are shown in Figure 1. In view of the unique properties of SP, it plays a key role in the spectrum of science ranging from physics to biology [48].…”

Section: Brief Introduction To Spsmentioning

confidence: 99%

Exciton-plasmon coupling interactions: from principle to applications

et al. 2017

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Abstract:The interaction of exciton-plasmon coupling and the conversion of exciton-plasmon-photon have been widely investigated experimentally and theoretically. In this review, we introduce the exciton-plasmon interaction from basic principle to applications. There are two kinds of exciton-plasmon coupling, which demonstrate different optical properties. The strong exciton-plasmon coupling results in two new mixed states of light and matter separated energetically by a Rabi splitting that exhibits a characteristic anticrossing behavior of the exciton-LSP energy tuning. Compared to strong coupling, such as surface-enhanced Raman scattering, surface plasmon (SP)-enhanced absorption, enhanced fluorescence, or fluorescence quenching, there is no perturbation between wave functions; the interaction here is called the weak coupling. SP resonance (SPR) arises from the collective oscillation induced by the electromagnetic field of light and can be used for investigating the interaction between light and matter beyond the diffraction limit. The study on the interaction between SPR and exaction has drawn wide attention since its discovery not only due to its contribution in deepening and broadening the understanding of SPR but also its contribution to its application in light-emitting diodes, solar cells, low threshold laser, biomedical detection, quantum information processing, and so on.

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Theory of surface plasmons and surface-plasmon polaritons

Cited by 1,336 publications

References 381 publications

Anisotropic excitation of surface plasmon polaritons on a metal film by a scattering-type scanning near-field microscope with a non-rotationally-symmetric probe tip

Anisotropic excitation of surface plasmon polaritons on a metal film by a scattering-type scanning near-field microscope with a non-rotationally-symmetric probe tip

A classical treatment of optical tunneling in plasmonic gaps: extending the quantum corrected model to practical situations

Exciton-plasmon coupling interactions: from principle to applications

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