P-Polarized nonlinear surface polaritons near the surface of a saturable self-defocusing medium

Abstract

We have investigated the properties of p-polarized nonlinear surface polaritons (NLSP) near the interface of two media, one of which is optically linear and the other having an optical nonlinearity with saturation and a dielectric function of the form ϵ=ϵ xx=ϵ zz=ϵ 0+a| E| 2/( 1+b| E| 2) , where E is the amplitude of the electric field, for the case ϵ 00, a<0, b⩾0; ϵ 1<0 (ϵ 1 is the dielectric function of the linear medium); | ϵ 1| ϵ 0.