title: Harmonics Generation by Surface Plasmon Polaritons on Single Nanowires.
abstract: We present experimental observations of visible wavelength second- and third-harmonic generation on single plasmonic nanowires of variable widths. We identify that near-infrared surface plasmon polaritons, which are guided along the nanowire, act as the source of the harmonics generation. We discuss the underlying mechanism of this nonlinear process, using a combination of spatially resolved measurements and numerical simulations to show that the visible harmonics are generated via a combination of both local and propagating plasmonic modes. Our results provide the first demonstration of nanoscale nonlinear optics with guided, propagating plasmonic modes on a lithographically defined chip, opening up new routes toward integrated optical circuits for information processing.
authors: FOM Institute AMOLF , Science Park 104, 1098 XG, Amsterdam, The Netherlands.
authors: Anouk
authors: A
authors: de Hoogh
authors: FOM Institute AMOLF , Science Park 104, 1098 XG, Amsterdam, The Netherlands.
authors: Aron
authors: A
authors: Opheij
authors: FOM Institute AMOLF , Science Park 104, 1098 XG, Amsterdam, The Netherlands.
authors: Matthias
authors: M
authors: Wulf
authors: FOM Institute AMOLF , Science Park 104, 1098 XG, Amsterdam, The Netherlands.
authors: Nir
authors: N
authors: Rotenberg
authors: FOM Institute AMOLF , Science Park 104, 1098 XG, Amsterdam, The Netherlands.
authors: L
authors: L
authors: Kuipers
keywords: harmonics generation; nanowires; nonlinear plasmonics