Above-light-line nonlinear surface polaritons near the surface of an epsilon-near-zero metamaterial

Groza, A. D.

doi:10.1080/09500340.2015.1071885

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…Subwavelength localization of SPP field around the interface allows to reduce dimensions of plasmonic devices under diffraction limit [3]; strong enhancement of the SPP localized field enlarges nonlinear response of their guiding structure [4]; the SPP field distribution with peak at the interface leads to high sensitivity of the waves to any changes in the interface properties [5]. Surface polaritons were extensively investigated at the surfaces of dielectrics [1,6], ferromagnetics [7], magnetic-semiconductor superlattices [8], metamaterials of hyperbolic [9] and nonlinear [10,11] types, etc. A lot of SPP-based plasmonic devices and structures have been suggested and fabricated: modulators [12,13], switches [13], waveguides [14], nanolasers [15], logic gates [16], chemical and biological sensors [17].…”

Section: Introductionmentioning

confidence: 99%

Above-light-line Nonlinear Surface Polaritons near a Conductive Interface: Threshold Case

Groza¹

2019

AEM

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We investigate the TM-polarized nonlinear surface polaritons (NLSP) propagating along aguided structure consisting of a magnetic optically linear medium and a non-magnetic opticallynonlinear medium with saturable permittivity separated by a flat conductive layer of zerothickness. We consider those values of hosting media bulk material parameters for which theNLSP existence (for zero sheet conductance) has threshold character with respect to the wavesintensity. Based on the exact solution of Maxwell's equations we show that the energy andpropagation properties of the NLSP near the above-light-line condition (1 > n > 0) dependconsiderably on the surface conductivity of the layer, even the threshold character of the NLSPcan be lost; for certain sheet conductance values these waves can exist in a linear limit. TheNLSP propagation constant is defined by both the surface conductivity and field intensity andcan be varied in a wide diapason, which gives an opportunity to obtain and control the importantfor quantum information processing 0 n  condition. For a chosen value of the NLSPpropagation constant the NLSP field intensity and energy flux decries when the surfaceconductivity grows; saturation of the nonlinear permittivity leads to an increase of the NLSPenergy flux compared with Kerr-like nonlinearity.

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Section: Introductionmentioning

confidence: 99%

Above-light-line Nonlinear Surface Polaritons near a Conductive Interface: Threshold Case

Groza¹

2019

AEM

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Near-zero-index nonlinear surface polaritons controlled by the surface conductivity of graphene

Groza

2018

Journal of Electromagnetic Waves and Applications

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Nonlinear Surface Polaritons near the Interface between a Magneto-Optical Substance and a Nonlinear Metamaterial with a Permittivity Close to Zero

Groza¹,

SIDDELEV²

2022

Scientific Herald of Uzhhorod University Series Physics

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Relevance. Considerable attention of researchers is drawn to nonlinear surface optical waves, as they are promising for application in optical information processing systems, ultra-sensitive sensors, and modern telecommunications components. Purpose. To obtain an exact solution of the Maxwell equation system for TM-polarised nonlinear surface polaritons propagating along the interface between an optically linear magnetic medium and an optically nonlinear medium with saturated nonlinearity. Methods. Analysis of the properties of nonlinear surface polaritons (NSP) and mathematical modelling of the dependence of the permittivity of a nonlinear medium on the intensity are used. Results. TM-polarised nanoparticles propagating along the interface of a magneto-optical medium and a nonlinear optical metamaterial with a permittivity close to zero (ENZ-metamaterial) are studied. For NSP in such a structure, an exact solution of the Maxwell equation system is obtained, considering the saturation effect of optical nonlinearity. On this basis, the dependences of constant propagation on the total energy flux of NSP and energy fluxes in contact media in the structure were investigated: magneto-optical ENZ-metamaterial with negative permittivity/nonlinear self-focusing ENZ-metamaterial. Conclusions. The NSP energy flow is positive in a nonlinear medium and negative in a linear one. As the saturation level decreases, the NSP energy fluxes in the contacting media increase modulo, if the value of the NSP propagation constant (NSPPC) is fixed. The lowest NSPPC value for guiding nonlinearity is obtained when the total energy flow of the NSP becomes zero. As the saturation level decreases, the NSP propagation variable (NSPPV) increases. At a fixed NSPPC, with a decrease in the magnetic permeability, the energy fluxes of NSP in the contacting media increase. When the magnetic permeability decreases to zero and the NSP energy flux is positive, the NSPPV change range narrows

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Above-light-line nonlinear surface polaritons near the surface of an epsilon-near-zero metamaterial

Cited by 3 publications

References 19 publications

Above-light-line Nonlinear Surface Polaritons near a Conductive Interface: Threshold Case

Above-light-line Nonlinear Surface Polaritons near a Conductive Interface: Threshold Case

Near-zero-index nonlinear surface polaritons controlled by the surface conductivity of graphene

Nonlinear Surface Polaritons near the Interface between a Magneto-Optical Substance and a Nonlinear Metamaterial with a Permittivity Close to Zero

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