Artículos de revistas
High-efficiency second harmonic generation from a single hybrid ZnO Nanowire/Au plasmonic Nano-Oligomer
Fecha
2014-11Registro en:
Grinblat, Gustavo Sergio; Rahmani, Mohsen; Cortés, Emiliano; Caldarola, Martín; Comedi, David Mario; et al.; High-efficiency second harmonic generation from a single hybrid ZnO Nanowire/Au plasmonic Nano-Oligomer; American Chemical Society; Nano Letters; 14; 11; 11-2014; 6660–6665
1530-6984
1530-6992
Autor
Grinblat, Gustavo Sergio
Rahmani, Mohsen
Cortés, Emiliano
Caldarola, Martín
Comedi, David Mario
Maier, Stefan A.
Bragas, Andrea Veronica
Resumen
We introduce a plasmonic-semiconductor hybrid nanosystem, consisting of a ZnO nanowire coupled to a gold pentamer oligomer by crossing the hot-spot. It is demonstrated that the hybrid system exhibits a second harmonic (SH) conversion efficiency of ∼3 × 10–5%, which is among the highest values for a nanoscale object at optical frequencies reported so far. The SH intensity was found to be ∼1700 times larger than that from the same nanowire excited outside the hot-spot. Placing high nonlinear susceptibility materials precisely in plasmonic confined-field regions to enhance SH generation opens new perspectives for highly efficient light frequency up-conversion on the nanoscale.