Nonlinear Optical Spectroscopy of Photonic Metamaterials
arXiv:0710.0599 · doi:10.1103/PhysRevB.78.113102
Abstract
We have obtained spectra of second-harmonic generation, third harmonic generation, and four-wave mixing from a fishnet metamaterial around its magnetic resonance. The resonant behaviors are distinctly different from those for ordinary materials. They result from the fact that the resonance is plasmonic, and its enhancement appears through the local field in the nanostructure.