|Title||Surfaces, films, and multilayers for compact nonlinear plasmonics|
|Publication Type||Journal Article|
|Year of Publication||2013|
|Authors||X. Liu, A. Rose, E. Poutrina, C. Ciracì, S. Larouche, D.R. Smith|
|Journal||Journal of the Optical Society of America B|
Nonlinear plasmonic devices have received much theoretical and experimental attention for their potential in compact, ultrafast all-optical applications. In particular, metals possess relatively large nonlinear susceptibilities and can enhance such processes further through massive field localization in sub-wavelength regions. However, the widespread use of metals in optics is hampered by the intrinsic losses and short propagation lengths of surface plasmons. These competing effects result in a rich and complex variety of dynamics even in simple plasmonic systems. In an attempt to fill up any possible gap, we present a step-by-step analysis of four-wave mixing (FWM) in one-dimensional stacks of metallo-dielectric structures, pointing out various channels of plasmonic and Fabry-Perot enhancement. We start from the derivation of oblique incidence FWM at a single interface and then extend these expressions into a transfer-matrix-based formalism to quantitatively study films and multilayer geometries. Throughout our analysis, we consider typical examples, such as signle silver interface, a thin silver film, and Fabry-Perot multilayers. In this way, we offer an intuitive view of the surprising rich dynamics supported by even the simplest of nonlinear plasmonic systems.
|Short Title||J. Opt. Soc. Am. B|