TY - JOUR
AU - Groza, A. D.
PY - 2019/06/09
Y2 - 2023/10/03
TI - Above-light-line Nonlinear Surface Polaritons near a Conductive Interface: Threshold Case
JF - Advanced Electromagnetics
JA - AEM
VL - 8
IS - 1
SE - Research Articles
DO - 10.7716/aem.v8i1.742
UR - https://aemjournal.org/index.php/AEM/article/view/742
SP - 91-98
AB - <p>We investigate the TM-polarized nonlinear surface polaritons (NLSP) propagating along a<br>guided structure consisting of a magnetic optically linear medium and a non-magnetic optically<br>nonlinear medium with saturable permittivity separated by a flat conductive layer of zero<br>thickness. We consider those values of hosting media bulk material parameters for which the<br>NLSP existence (for zero sheet conductance) has threshold character with respect to the waves<br>intensity. Based on the exact solution of Maxwell's equations we show that the energy and<br>propagation properties of the NLSP near the above-light-line condition (1 > n > 0) depend<br>considerably on the surface conductivity of the layer, even the threshold character of the NLSP<br>can be lost; for certain sheet conductance values these waves can exist in a linear limit. The<br>NLSP propagation constant is defined by both the surface conductivity and field intensity and<br>can be varied in a wide diapason, which gives an opportunity to obtain and control the important<br>for quantum information processing 0 n condition. For a chosen value of the NLSP<br>propagation constant the NLSP field intensity and energy flux decries when the surface<br>conductivity grows; saturation of the nonlinear permittivity leads to an increase of the NLSP<br>energy flux compared with Kerr-like nonlinearity.</p>
ER -