Field profiles of coupled surface plasmon-polaritons

Smith, Lucy H.; Taylor, Melita C.; Hooper, Ian R.; Barnes, William

doi:10.1080/09500340802271250

Cited by 34 publications

(34 citation statements)

References 28 publications

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“…The optical excitation of the LRSPP was applied to increase the sensitivity of refractive index sensing in surface plasmon resonance (SPR) sensors [12]. In a metal-insulator-metal (MIM) structure consisting of an insulator layer sandwiched by metals, the coupling between two SPPs at the two I/M interfaces generates also the S-SPP and AS-SPP modes [7][8][9][13][14][15][16][17]. The AS-SPP mode in the MIM structue is also a long-range mode.…”

Section: Introductionmentioning

confidence: 99%

“…The electromagnetic modes supported by the MIM structure have long been studied theoretically and experimentally [7][8][9][13][14][15][16][17][18][19][20]. In addition to the S-SPP and AS-SPP that arise from the coupling of two degenerate SPP modes, the MIM structure can support transverse electric (TE) modes analogous to those supported by Fabry-Pérot cavities [34].…”

Section: Introductionmentioning

confidence: 99%

“…The electromagnetic fields associated with the SPPs decay exponentially away from the interface. It is well known that when a metal film is surrounded by the same insulators, i.e., an insulator-metal-insulator (IMI) structure, coupling between two SPPs propagating along the two I/M interfaces with the same dispersion curve (degenerate dispersion) takes place provided that the metal film is thin enough (<∼100 nm) [1-3, [7][8][9]. The coupling of the SPP modes results in a symmetric SPP (S-SPP) mode and an antisymmetric SPP (AS-SPP) mode characterized by symmetric and antisymmetric distributions of tangential electric fields and surface charges.…”

Section: Introductionmentioning

confidence: 99%

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Anticrossing Behavior of Surface Plasmon Polariton Dispersions in Metal-Insulator-Metal Structures

et al. 2015

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The anticrossing behavior of dispersion curves of the surface plasmon polaritons supported by metalinsulator-metal structures are studied experimentally and theoretically. Samples consisting of a poly(methyl methacrylate) layer sandwiched by Ag films are prepared and their angle-and wavelength-scan attenuated total reflection spectra are measured. From an analysis of the angle-scan spectrum, the coupled-mode nature of the surface plasmon polariton modes is suggested. The dispersion relations obtained from the wavelength-scan spectra exhibit clearly the anticrossing behavior that arises from the coupling of the modes. The experimental dispersion relations are in good agreement with theoretical ones.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Anticrossing Behavior of Surface Plasmon Polariton Dispersions in Metal-Insulator-Metal Structures

et al. 2015

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“…42 Losses due to surface roughness are likely to be more apparent when a surface mode is excited (as here) then for normal incindence illumination (as for our parameter retrieval procedure). We have also calculated 43 and plotted the magnetic component of the p-polarised optical field through the sample for the same incident wavelength and angle in Figure 4b. In this figure two features are apparent: first, going from the prism/TDBC:PVA interface into the TDBC:PVA film the field decays with distance -this is expected for an absorbing film; second, the field rises again towards the TDBC:PVA/air interface -indeed, the field decays on either side of the TDBC:PVA interface, just as expected for a surface mode.…”

mentioning

confidence: 99%

Optical Field-Enhancement and Subwavelength Field-Confinement Using Excitonic Nanostructures

Gentile¹,

2014

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We show that dye-doped polymers open an interesting route to controlling light at the nanoscale. Just as for the much better known metal-based plasmonic systems, propagating and localized modes are possible. We show that the attractive features offered by plasmonics, specifically enhanced optical fields and sub-wavelength field confinement, are also available with these materials. They thus open a new opportunity in nanophotonics in which fabrication and functionality might be achieved by harnessing molecular and supramolecular chemistry.Much is expected of plasmonics, with applications being pursued over a wide range of fields from on-chip plasmonic circuits 1 to nanoantennae for the emission of light. 2 The key to this wideranging interest is that plasmonics enables the control of light deep into the sub-wavelength regime, right down to the nanoscale. 3 Noble metals such as gold and silver have fuelled the plasmonics

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“…The terms long-range and short-range surface modes arise from the respective long and short propagation lengths of these modes compared to the propagation of SPPs on single interfaces. These propagation lengths are the result of the reduced or increased absorption due to the field distribution in the conducting layer [24]. In 1978 Kovacs demonstrated that high losses in thin slabs of metals is not an impediment for the excitation of long-surface surface modes [25].…”

Section: Guided Modes Along Absorbing Thin Layersmentioning

confidence: 99%

Long-range guided THz radiation by thin layers of water

Sczech¹,

Rivas²,

Berrier³

et al. 2012

Opt. Express

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Sczech, R.; Gómez Rivas, J.; Berrier, A.; Giannini, V.; Pirruccio, G.; Debus, C.; Schäfer-Eberwein, H.; Haring Bolivar, P. Document VersionPublisher's PDF, also known as Version of Record (includes final page, issue and volume numbers) Please check the document version of this publication:• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publicationCitation for published version (APA): Sczech, R., Gómez Rivas, J., Berrier, A., Giannini, V., Pirruccio, G., Debus, C., ... Haring Bolivar, P. (2012). Long-range guided THz radiation by thin layers of water. Optics Express, 20(25), 27781-27791. DOI: 10.1364/OE.20.027781 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Abstract:We propose a novel method to guide THz radiation with low losses along thin layers of water. This approach is based on the coupling of evanescent surface fields at the opposite sides of the thin water layer surrounded by a dielectric material, which leads to a maximum field amplitude at the interfaces and a reduction of the energy density inside the water film. In spite of the strong absorption of water in this frequency range, calculations show that the field distribution can lead to propagation lengths of several centimeters. By means of attenuated total reflection measurements we demonstrate the coupling of incident THz radiation to the long-range surface guided modes across a layer of water with a thickness of 24 μm. This first demonstration paves the way for THz sensing in aqueous environments.

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Field profiles of coupled surface plasmon-polaritons

Cited by 34 publications

References 28 publications

Anticrossing Behavior of Surface Plasmon Polariton Dispersions in Metal-Insulator-Metal Structures

Anticrossing Behavior of Surface Plasmon Polariton Dispersions in Metal-Insulator-Metal Structures

Optical Field-Enhancement and Subwavelength Field-Confinement Using Excitonic Nanostructures

Long-range guided THz radiation by thin layers of water

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