中国物理B ›› 2011, Vol. 20 ›› Issue (3): 37302-037302.doi: 10.1088/1674-1056/20/3/037302
于丽1, 逯志欣1, 刘炳灿2
Liu Bing-Can(刘炳灿)a)b)†, Yu Li(于丽) a), and Lu Zhi-Xin(逯志欣)a)
摘要: The analytic surface plasmon polaritons (SPPs) dispersion relation is studied in a system consisting of a thin metallic film bounded by two sides media of nonlinear dielectric of arbitrary nonlinearity is studied by applying a generalised first integral approach. We consider both asymmetric and symmetric structures. Especially, in the symmetric system, two possible modes can exist: the odd mode and the even mode. The dispersion relations of the two modes are obtained. Due to the nonlinear dielectric, the magnitude of the electric field at the interface appears and alters the dispersion relations. The changes in SPPs dispersion relations depending on film thicknesses and nonlinearity are studied.
中图分类号: (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))