Nonlinear long-range plasmonic waveguides

Degiron, Aloyse; Smith, David R.

doi:10.1103/physreva.82.033812

Cited by 31 publications

(20 citation statements)

References 33 publications

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“…Studies of nonlinear plasmonic systems or metamaterials include nonlinear plasmonic waveguides [10][11][12][13][14][15], nonlinear self-action [16], active control [17], nanofocusing [18], nonlinear switching [19,20], and four-wave mixing [21]. As was recently pointed out by several groups [22,23], most of these studies make the assumption that the response of the metal is linear and that the nonlinearity only originates from the dielectric medium adjacent to the metal.…”

Section: Introductionmentioning

confidence: 99%

Scaling of the nonlinear response of the surface plasmon polariton at a metal/dielectric interface

et al. 2014

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Plasmonic systems involve interfaces containing metal and dielectric materials. In an effort to investigate the scaling of the nonlinear response of the surface plasmon polariton at a metal/dielectric interface, where the metal and dielectric present optical nonlinearity, we introduce a figure-of-merit that quantifies the contribution of the metal and the dielectric to the nonlinear response in this specific situation. In the case of self-action of the surface plasmon polariton for the gold/dielectric interface, we predict that the dielectric nonlinear response is dominant for strongly nonlinear dielectrics such as polydiacetylenes, chalcogenide glasses, or even semiconductors. The gold nonlinear response is dominant only in cases involving weakly nonlinear dielectrics such as silicon dioxide or aluminum oxide. We verify the relevance of the metric by investigating the process of optical switching via the third-order nonlinear response and discuss which gold/dielectric combinations have better switching behaviors.

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Section: Introductionmentioning

confidence: 99%

Scaling of the nonlinear response of the surface plasmon polariton at a metal/dielectric interface

et al. 2014

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“…These observations are expected from the saturable behavior suggested by Eq. (9). Since the relation between the average power P and the peak-power density S of the SPP is P = S τν rep π 1/2 φ L /2, where φ L is the beam width, we are able to fit each experimental curve from ) [27].…”

Section: Model Of Self-action Of Surface Plasmon Polaritonsmentioning

confidence: 99%

“…Artificially structured metamaterials incorporating plasmonic components offer a promising route to enhancing nonlinear processes [4][5][6]; however, many open questions remain to fully understand the physics of nonlinear phenomena in conductors that provide the plasmonic response. In most of the nonlinear plasmonic configurations investigated thus far, the dielectric component has been assumed to provide the dominant nonlinear system response [5][6][7][8][9][10][11][12]. However metals are known to have relatively large nonlinear susceptibilities, making SPPs intrinsically nonlinear excitations [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Ultrafast self-action of surface-plasmon polaritons at an air/metal interface

et al. 2015

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We investigate both theoreticaally and experimentally the nonlinear propagation of surface plasmon polaritons (SPP) on a single air/metal interface. Inspired by nonlinear dielectric waveguide theory, we analytically derive a model that describes the nonlinear propagation of SPPs, thus bridging the description of plasmonic and dielectric waveguides. The model, the numerical simulations and the experiments, which are carried out in the hundred femtosecond regime, reveal that the SPP undergoes strong ultrafast self-action which manifests itself through selfinduced absorption. Our observations are consistent with a large, bulk, third-order nonlinear susceptibility (χ(3)) of gold and provide a selfconsistent theory of self-action of SPPs at an air/metal interface. Experimentally, we find Im{χ (3)} 3×10-16 m2/V2. These findings have important implications in the nonlinear physics of plasmonics and metamaterials as they provide evidence that nonlinear absorption has a significant effect on the propagation of SPPs excited by intense optical pulses. This self-action is also expected to affect the anomalous absorption of light near subwavelength structures as well as the strength of desirable nonlinear processes such as third-harmonic generation and four-wave mixing, which will inevitably compete with nonlinear absorption.

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“…This compact confinement results from its ability of exploiting the coupling between electromagnetic fields and oscillations of the conductor's electron plasma. Moreover, due to the property of concentrating energy at the metal-dielectric interface and the existence of metal, SPP waveguides provide the possibility of easy-achieving optical nonlinearities [8], [9] and introducing thermooptic effects [10], [11] or electrooptic effects [12] by using the same metal as electrodes. The control signal propagating in an SPP waveguide is more accessible.…”

Section: Introductionmentioning

confidence: 99%

A Slot-Based Surface Plasmon-Polariton Waveguide With Long-Range Propagation and Superconfinement

et al. 2012

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A full-vector spectral element method (SEM) is applied to model and simulate surface plasmon-polariton (SPP) waveguides. Gauss-Lobatto-Legendre (GLL) polynomials are used to construct higher-order basis functions to achieve spectral accuracy. A discretization scheme featuring a nonuniform mesh with extra elements near the metal-dielectric interface is proposed to capture the waveguide configuration and dramatical mode field variations of the SPP waveguide. The studies on the accuracy and mode field distribution show that SEM is highly efficient and accurate. Using SEM simulation, a slot-based SPP waveguide operating at telecom wavelengths is proposed. Numerical results show that the proposed structure can simultaneously achieve millimeter-scale propagation distance (L-p similar to 2.6 mm) and below-diffraction-limited effective mode area (A(eff)/A(0) similar to 0.3). Parametric plots illustrate a significant improvement when compared to conventional SPP waveguides. Investigation of the mode width and crosstalk also demonstrates the excellent 3-D integration performance of the structure. The proposed slot-based SPP waveguide thus can become a potential candidate for highly integrated photonic circuits.China Scholarship Council (CSC

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Nonlinear long-range plasmonic waveguides

Cited by 31 publications

References 33 publications

Scaling of the nonlinear response of the surface plasmon polariton at a metal/dielectric interface

Scaling of the nonlinear response of the surface plasmon polariton at a metal/dielectric interface

Ultrafast self-action of surface-plasmon polaritons at an air/metal interface

A Slot-Based Surface Plasmon-Polariton Waveguide With Long-Range Propagation and Superconfinement

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