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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A solution is obtained of the stationary problem of p-polarized nonlinear surface polaritons (NLSP) near the interface of two media, one of which is optically linear and the other one has an optical nonlinearity with saturation. On this base the properties of the NLSP propagating along the interface of the self-focusing medium with positive dielectric function and the linear medium with positive dielectric function are investigated in detail.

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.

Short Notes K 2 1 phys. stat. sol. ( b ) 170, K21 (1992) Subject classification: 68.30 and 78.65 Central Research Institute of Shipbuilding Technology, Nikolaev Branch1 ) ( a ) and Department of Radiophysics, Kiev State University2 ) ( b ) p-Polarized Nonlinear Surface Polaritons near the S % x r f a c e of a Saturable Self-Focusing Medium BY A . D . GROZA (a) and V.L. STRIZHEVSKII ( b ) Recently the properties of p-polarized nonlinear surface optical waves have been investigated theoretically in a number of papers 11 to 1 7 / . In most of the papers the field-dependent dielectric function was supposed to be unsaturated, a dependence of the dielectric function on one of the field components (transverse or longitudinal) was neglected, and so on. The exact theory free of such approximations is presented in /18 to 221 (note, the solutions in 118 to 20/ are capable of dealing with different types of non-linear mechanisms). Using the solution 121, 221 we have investigated the properties of the NLSP propagating along the interface of a linear medium with negative dielectric function an(\ a saturable self-focusing medium.Consider a p-polarized NLSP propagating along the interface (z = 0) plane of two non-magnetic media, one of which (medium I in the region z < 0) is optically linear and the other (medium I1 in the region z > 0) is optically nonlinear. The