Long-range surface polaritons in ultra-thin films of silicon

Giannini, Vincenzo; Zhang, Y.; Forcales, M.; Rivas, Jaime Gómez

doi:10.1364/oe.16.019674

Cited by 40 publications

(26 citation statements)

References 30 publications

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“…This work was extended by Yang and co-workers to non-metallic materials with very large absorption at infrared frequencies [26]. Giannini et al [27] and Arnold et al [28] demonstrated the excitation of long-range guided modes at optical frequencies in strongly absorbing films. These modes, described by Eq.…”

Section: Guided Modes Along Absorbing Thin Layersmentioning

confidence: 90%

“…(3) defines also the dispersion of short-range modes in thin layers of absorbing dielectrics. However, these short-range modes are leaky waves that do not propagate along the slab [26,27]. In order to illustrate the characteristic lengths of long-range guided modes along water films, we consider the system formed by a thin layer of water homogeneously surrounded by a lossless and non-dispersive dielectric with permittivity ε 1 = ε 3 = 2.36.…”

Section: Guided Modes Along Absorbing Thin Layersmentioning

confidence: 99%

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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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Section: Guided Modes Along Absorbing Thin Layersmentioning

confidence: 90%

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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show abstract

“…Figure 2(b) displays the reflectance measured for s-polarized incident light. The LRGM resonance is not present for this polarization, given that this mode is only supported for p-polarization [6,7,10]. The resonance at angles lower than 65 • is due to a Fabry-Pérot resonance into the PMMA layer.…”

Section: Experimental Demonstration Of Lrgms Emissionmentioning

confidence: 91%

“…This coupling reduces the energy density inside the thin film and provides the long-range propagation characteristics of these modes [7][8][9]. Even though the characteristics of LRGMs in terms of confinement and propagation are not as good as those of LRSPPs, LRGMs in strongly absorbing thin layers can propagate 10's to 100's of vacuum wavelengths along the layer, while still being confined within a wavelength to the surface [10].…”

Section: Introductionmentioning

confidence: 99%

Modified light emission from emitters coupled to long-range guided modes in strongly absorbing layers

Arnold¹,

Zhang²,

Rivas³

2012

Opt. Express

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Abstract:We demonstrate the near-field coupling and energy transfer between photoexcited dye molecules and guided modes in layers of strongly absorbing dielectrics. The dye molecules decay by exciting long-range guided modes (LRGMs) in a thin layer of chalcogenide glass. These modes can exist in spite of the very large absorption of the material forming the layer. The LRGMs are detected by coupling then out to free space radiation through a prism in the Krestschmann configuration. By calculating the dissipated power of a dipole, representing a dye molecule, in the vicinity of the absorbing thin film, we show that there is a large probability of decay exciting LRGMs. This probability can reach 35% for perpendicularly oriented dipoles. The demonstration of the excitation of LRGMs in thin films of absorbing dielectrics by near-field coupling of excited molecules opens the possibility to compensate for the losses in the propagation of these modes. 19674-19685 (2008

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“…Moreover, plasmonic excitation can be also obtained in the far infrared zone using doped semiconductors 21,22 or in the ultraviolet zone using aluminium or silicon, in particular, the latter offers the possibility to excite ultraviolet long-range surface polaritons in extremely thin films 23 . However, metals present high non-radiative losses that lead to unwanted heating limiting some of their applications in photonics.…”

Section: Introductionmentioning

confidence: 99%

Linear ultrafast dynamics of plasmon and magnetic resonances in nanoparticles

et al. 2017

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In this study we present an analytical description of the ultrafast localized surface plasmon and magnetic resonance dynamics in a single nanoparticle (Ag or Si, respectively), driven by an ultrashort (fs-timescale) Gaussian pulse. Three possible scenarios have been found depending on the incident field, i.e. pulse duration much shorter, similar and much longer than the localized surface plasmon resonance (LPSR) lifetime. A rich physics arises for τ pulse < τLSP R, even in the linear regime. The surface plasmon dynamics is manifested as (i) a temporal delay of the surface plasmon excitation with regard to the freely propagating pulse and (ii) as a negative exponential tail after the exciting pulse is over. In addition, for sub-fs pulses clear oscillations in the near-field decay have been observed. A similar scenario has been observed considering a non-absorbing Si sphere. Nanoparticle resonance dynamics may lead to a wealth of new phenomena and applications in nanophotonics such as multipole order resonances interference, pulse induced delay or temporal shaping on the fsscale, high harmonic generation, attosecond near-field pulse sources and electron acceleration from metasurface or 3D engineered nanostructures.

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Long-range surface polaritons in ultra-thin films of silicon

Cited by 40 publications

References 30 publications

Long-range guided THz radiation by thin layers of water

Long-range guided THz radiation by thin layers of water

Modified light emission from emitters coupled to long-range guided modes in strongly absorbing layers

Linear ultrafast dynamics of plasmon and magnetic resonances in nanoparticles

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