Imaging the Local Density of States of Optical Corrals

Chicanne, C.; David, T.; Quidant, Romain; Weeber, Jean-Claude; Lacroute, Y.; Bourillot, Eric; Dereux, Alain; Francs, Gérard Colas des; Girard, Christian

doi:10.1103/physrevlett.88.097402

Cited by 156 publications

(117 citation statements)

References 15 publications

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“…It allows to account for the huge increase of energy density close to an interface when surface waves are excited 37,38 . It also plays a key role in defining the lifetime of a single emitter close to an interface 39,40,41,42,43 . In this context, the increase of the projected LDOS is usually normalized by the LDOS in a homogeneous medium (e.g.…”

Section: B Local Density Of Statesmentioning

confidence: 99%

Surface plasmon Fourier optics

et al. 2009

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Surface plasmons are usually described as surface waves with either a complex wavevector or a complex frequency. When discussing their merits in terms of field confinment or enhancement of the local density of states, controversies regularly arise as the results depend on the choice of a complex wavevector or a complex frequency. In particular, the shape of the dispersion curves depends on this choice. When discussing diffraction of surface plasmon a scalar approximation is often used. In this work, we derive two equivalent vectorial representations of a surface plasmon field using an expansion over surface waves with either a complex wavevector or a complex frequency. These representations can be used to account for propagation and diffraction of surface waves. They can also be used to discuss the issue of field confinment and local density of states as they have a non-ambiguous relation with the two dispersion relations.

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Section: B Local Density Of Statesmentioning

confidence: 99%

Surface plasmon Fourier optics

et al. 2009

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“…The full three-dimensional model was composed of an orthorhombic gold nanorod placed on a glass substrate with a dielectric constant ε g =2. 25. The gold dielectric constants were taken from [30].…”

Section: Methodsmentioning

confidence: 99%

“…A two-photon luminescence non linear process (TPL) is used to probe the local electromagnetic field enhancement provided by LSP resonances [24,25,26,27]. Specifically, we demonstrate a selective excitation of bright and dark SP resonances using a first-order Hermit-Gaussian beam.…”

Section: Introductionmentioning

confidence: 99%

Selective excitation of bright and dark plasmonic resonances of single gold nanorods

Demichel¹,

Petit²,

Francs³

et al. 2014

Opt. Express

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Abstract:Plasmonic dark modes are pure near-field resonances since their dipole moments are vanishing in far field. These modes are particularly interesting to enhance nonlinear light-matter interaction at the nanometer scale because radiative losses are mitigated therefore increasing the intrinsic lifetime of the resonances. However, the excitation of dark modes by standard far field approaches is generally inefficient because the symmetry of the electromagnetic near-field distribution has a poor overlap with the excitation field. Here, we demonstrate the selective optical excitation of bright and dark plasmonic modes of single gold nanorods by spatial phase-shaping the excitation beam. Using two-photon luminescence measurements, we unambiguously identify the symmetry and the order of the emitting modes and analyze their angular distribution by Fourier-space imaging.

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“…One of the central issue in this field is the control over the coupling between fluorescent quantum emitters and nano-antennas or compact plasmonic devices [3,4]. Experimentally, many key results have been obtained in the last decade thank to the development of methods like active probe near-field optical microscopy [5,6], and to rapid progress in nanofabrication technics and particle synthesis [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Equivalence between the Hamiltonian and Langevin noise descriptions of plasmon polaritons in a dispersive and lossy inhomogeneous medium

Drezet

2017

Phys. Rev. A

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We demonstrate the fundamental links existing between two different descriptions of quantum electrodynamics in inhomogeneous, lossy and dispersive dielectric media which are based either on the Huttner-Barnett formalism for polaritons [B. Huttner and S. M. Barnett, Phys.Rev. A 46, 4306 (1992)] or the Langevin noise approach using fluctuating currents [T. D.-G. Welsch, Phys.Rev.A 53, 1818 (1996)]. In this work we demonstrate the practical equivalence of the two descriptions by introducing the concept of effective photon state associated with some specific noise current distribution. We study the impact of these results on the calculation and interpretation of quantum observables such as fluctuations, correlations, and Casimir forces.

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Imaging the Local Density of States of Optical Corrals

Cited by 156 publications

References 15 publications

Surface plasmon Fourier optics

Surface plasmon Fourier optics

Selective excitation of bright and dark plasmonic resonances of single gold nanorods

Equivalence between the Hamiltonian and Langevin noise descriptions of plasmon polaritons in a dispersive and lossy inhomogeneous medium

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