Tunable long-range surface plasmon polaritons taking advantage of nonlinear surface waves.
- Resource Type
- Article
- Authors
- Weiwei Shao; Lin Li; Weiwu Liu; Tianhao Zhang; Huihui Ma; Jingjun Xu; Jianguo Tian
- Source
- Applied Physics Letters. 11/23/2009, Vol. 95 Issue 21, p211105. 3p. 1 Color Photograph, 2 Graphs.
- Subject
- *SURFACE plasmon resonance
*SUBSTRATES (Materials science)
*SURFACE energy
*SURFACE waves (Fluids)
*DIELECTRICS
*POLARITONS
- Language
- ISSN
- 0003-6951
We present an improved Kretschmann configuration with nonlinear dielectric as substrate, in which long-range surface plasmon polaritons (SPPs) may appear, the modes and propagation lengths are tunable. We numerically simulated the solutions of SPP modes and their propagations. The results show that the SPP propagation length can range from tens of micrometers to tens of centimeters or even longer. The configuration proposed in this letter makes a breakthrough of the intrinsic restriction in conventional Kretschmann configuration and there exist the continuous steady SPP modes also in the range of k0[variant_greek_epsilon]31/2>β>k0[variant_greek_epsilon]11/2. It allows for optimization of SPP properties and makes SPP application more flexible in practices. [ABSTRACT FROM AUTHOR]