Speckle correlation functions applied to surface plasmons

Beijnum, Frerik van; Sirre, Jeroen; Rétif, C.; Exter, M. P. van

doi:10.1103/physrevb.85.035437

Cited by 9 publications

(6 citation statements)

References 22 publications

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“…The dominant contribution is defined by metal/dielectric properties, laser wavelength, and distance from the object. CWs were shown to play a significant role in the extraordinary optical transmission through periodic and random nanohole arrays and to contribute to the interaction of light with all-nanostructured metallic surfaces [3,4,22,23]. Finally, an analytical asymptotic solution for total field scattered by a single sub-wavelength hole was derived [18], making it possible to separate the contributions from the different waves.…”

Section: Introductionmentioning

confidence: 99%

Self-organization of surfaces on the nanoscale by topography-mediated selection of quasi-cylindrical and plasmonic waves

et al. 2019

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Using coupled electromagnetic and hydrodynamic calculations, we elucidate theoretically the topographic transition from a random metallic surface to a periodic sub-wavelength grating by ultrashort laser ablation. The origin of this transition lies in the successive selection of hybrid surface waves scattered by random nanoholes. Contrary to the common belief that surface plasmon polaritons play the dominant role in the process and define the grating periodicity, we show that both quasi-cylindrical and surface plasmon waves are involved, whereas the diversity in the resulting spacings λ/2–λ (λ is the laser wavelength) is the manifestation of a broad frequency overlap of these waves, controlled by their relative phase shifts with respect to the plasmonic counterparts. The topography evolution imposes the dominant contribution to the surface sub-wavelength pattern by selecting the appropriate wave character from plasmonic modes to evanescent cylindrical waves. With the radiation dose, the grating periodicity exhibits a pronounced blue shift due to reinforced dipole–dipole coupling between the nanoholes and surface curvatures in the laser-processed area. This allows the creation of regular patterns with tunable periodicity.

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Section: Introductionmentioning

confidence: 99%

Self-organization of surfaces on the nanoscale by topography-mediated selection of quasi-cylindrical and plasmonic waves

et al. 2019

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“…32 In summary, this work provides the key ingredient necessary to understand, and completely model, the light-matter interactions of holes: a quantification of the electromagnetic response of the hole. This quantification has long been missing in earlier theoretical studies of the microscopic optical properties of holes 5,6 and newer experimental works on surface plasmon resonances, 20 scattering losses, 33 the different fields present, 22 or the near- 23 and far-field 24 radiation patterns associated with subwavelength holes.…”

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confidence: 99%

Magnetic and electric response of single subwavelength holes

et al. 2013

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We use polarization-resolved near-field measurements, in conjunction with electromagnetic theory, to separate and quantify the electric and magnetic optical response of subwavelength holes in thick gold films. Using 1550 nm light, we determine the amplitudes of the electric and magnetic polarizabilities of holes with diameters ranging from 600 to 1000 nm. Additionally, we study the scattered field distributions that arise from the interactions of the holes with surface plasmon polaritons, and show that forward-backward scattering ratios as high as 2.5 : 1 are possible. Our study provides experimental access and theoretical understanding of the full electromagnetic polarizability that describes the optical response of metallic holes at telecom wavelengths, which is a prototypical structure in currently explored optical signal processing and sensing devices.

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“…For example, depending on the degree of multiple scattering (as parametrized by the scattering mean free path), scattering can give rise to long and short range correlations, weak and strong (Anderson) localization and fluctuations in the local density of states. A substantial amount of work has been dedicated to study such phenomena in both the optical [26][27][28][29][30][31] and plasmonic domains [32][33][34][35][36][37][38] over the years. Indeed, exploitation of random scattering has a rich track record in optics.…”

Section: Introductionmentioning

confidence: 99%

Role of Multiple Scattering in Single Particle Perturbations in Absorbing Random Media

Berk,

Foreman

2021

Preprint

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Speckle patterns produced by disordered scattering systems exhibit a sensitivity to addition of individual particles which can be used for sensing applications. Using a coupled dipole model we investigate how multiple scattering can enhance field perturbations arising in such random scattering based sensors. Three distinct families of multiple scattering paths are shown to contribute and the corresponding complex enhancement factors derived. Probability distributions of individual enhancement factors over the complex plane are characterised numerically within the context of surface plasmon polariton scattering in which absorption is shown to play an important role. We show that enhancements become more strongly dependent on individual scatterer properties when absorption losses are larger, however, amplitude enhancements ∼ 10 2 , comparable to low loss surface plasmons, are achievable through sensor optimisation. Approximate analytic expressions for the complex mean enhancements are also found, which agree well with simulations when loop contributions are negligible.

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Speckle correlation functions applied to surface plasmons

Cited by 9 publications

References 22 publications

Self-organization of surfaces on the nanoscale by topography-mediated selection of quasi-cylindrical and plasmonic waves

Self-organization of surfaces on the nanoscale by topography-mediated selection of quasi-cylindrical and plasmonic waves

Magnetic and electric response of single subwavelength holes

Role of Multiple Scattering in Single Particle Perturbations in Absorbing Random Media

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