Here we report the second harmonic emission properties of selforganized gold nanowires arrays supported on dielectric substrates with a sub-wavelength periodic pattern. The peculiar morphology of the nanowires, which are locally tilted with respect to the average plane of the substrate, allows to generate maximum second harmonic signal at normal incidence with a polarization direction driven by the orientation of the wires (perpendicular to the wires). The generation efficiency was increased by tailoring the growth process in order to tune the metal plasmon resonance close to the pump field frequency and also by increasing the local tilt of the nanowires.
Tailored second harmonic generation from selforganized metal nano-wires arrays / Belardini, Alessandro; Larciprete, Maria Cristina; Centini, Marco; Fazio, Eugenio; Sibilia, Concetta; Bertolotti, Mario; Toma, A; Chiappe, D; BUATIER DE MONGEOT, F.. - In: OPTICS EXPRESS. - ISSN 1094-4087. - STAMPA. - 17:5(2009), pp. 3603-3609. [10.1364/OE.17.003603]
Tailored second harmonic generation from selforganized metal nano-wires arrays
BELARDINI, ALESSANDRO;LARCIPRETE, Maria Cristina;CENTINI, MARCO;FAZIO, Eugenio;SIBILIA, Concetta;BERTOLOTTI, Mario;
2009
Abstract
Here we report the second harmonic emission properties of selforganized gold nanowires arrays supported on dielectric substrates with a sub-wavelength periodic pattern. The peculiar morphology of the nanowires, which are locally tilted with respect to the average plane of the substrate, allows to generate maximum second harmonic signal at normal incidence with a polarization direction driven by the orientation of the wires (perpendicular to the wires). The generation efficiency was increased by tailoring the growth process in order to tune the metal plasmon resonance close to the pump field frequency and also by increasing the local tilt of the nanowires.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.