Nonlinear dispersion relation for surface plasmon at a metal–Kerr medium interface

Huang, Jui Hsien; Chang, Rong‐Yeu; Leung, P. T.; Tsai, Din Ping

doi:10.1016/j.optcom.2008.12.025

Cited by 37 publications

(23 citation statements)

References 18 publications

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“…To be able to ignore the nonlinear response of graphene in the calculations, a highly nonlinear self-focusing material with α = 6.4 × 10 −12 m 2 V −2 is also chosen [21,27]. Furthermore, considering σ lin g E in the calculations are justified as long as the optical frequency is above 1 THz for the modal field strength of the order of ∼ 10 6 V/m.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, considering graphene as a material with a nonlinear optical response [19], nonlinear propagation of light in a monolayer [20] and a double-layer [16] of graphene have been studied theoretically. It has been also found through pure analytical and numerical studies that using a Kerr-type nonlinear medium as the substrate, cladding or core medium in a metallic waveguide considerably affects the characteristics of SPs supported by such structures [21][22][23][24][25]. These characteristics of a graphene sheet on a Kerr-type nonlinear substrate [26] and a graphene PPW bounded by the Kerr media [27] have been recently studied while neglecting the nonlinear optical response of graphene.…”

Section: Introductionmentioning

confidence: 99%

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Guided Plasmon Modes of a Graphene-Coated Kerr Slab

et al. 2015

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We study analytically propagating surface plasmon modes of a Kerr slab sandwiched between two graphene layers. We show that some of the modes that propagate forward at low field intensities start propagating with negative slope of dispersion and positive flux of energy (fast-light surface plasmons) when the field intensity becomes high. We also discover that our structure supports an additional branch of low-intensity fast-light guided modes. The possibility of dynamically switching between the forward and the fast-light plasmon modes by changing the intensity of the excitation light or the chemical potential of the graphene layers opens up wide opportunities

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Guided Plasmon Modes of a Graphene-Coated Kerr Slab

et al. 2015

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“…Switching states in nonlinear optic devices are a subject of intense investigation recently in optics [6,15,21,24,32]. Optical devices are being studied and engineered to eventually replace electronic devices and carry out the same function but with better performance.…”

Section: Optical Bistabilitymentioning

confidence: 99%

Nonlinear plasmonics with Kerr-like media for sensing

et al. 2014

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Sensing technologies are currently needed for better maintainability, reliability, safety, and monitoring small variable changes on microscopic and nanoscale systems. Plasmonic sensor research has contributed to chemical and biological sensing needs by monitoring ultrafast temporal and spatial changes in optoelectronic systems. Nonlinear plasmonic waveguides with subwavelength confinement can further enhance the capabilities of plasmonic devices. Results in this paper highlight the derivation of the full-vector Maxwell Equations for the single metal-dielectric slot waveguide and the metal -dielectric -metal waveguide with the dielectric having a Kerr-like nonlinearity. These waveguides, typically have metallic losses that compete with nonlinearity at certain frequencies that can hinder surface plasmon wave propagation. By considering temporal and spatial beam propagation in these waveguides one expects to observe novel effects that could be used for sensing applications such as femtosecond pulse propagation with plasmon self-focusing, self-trapping, and frequency conversion with reduction in metallic losses.

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“…With the assumption of the free electron Drude model for the metal, ε M reduces to the following expression [53]:…”

Section: Theorymentioning

confidence: 99%