Product Code: ICA11_N104

Plasmonic Devices Fabricated by Femtosecond Laser Nanowelding
Authors:
Anming Hu, University of Waterloo; Waterloo ON Canada
Presented at ICALEO 2011

Laser nanowelding appears as a powerful tool for nanomanufaturing. We fabricate plasmonic devices with femtosecond laser irradiation with the aid of the near-field scanning optical microscopy (NSOM). NSOM is employed for both nanowelding and in-situ characterization. It is displayed that femtosecond laser irradiation induces a non-thermal ultrafast melting of metal nanomaterials, resulting in welding of Ag nanowires, nanoparticles and nanoplates. The laser-nanomaterial interaction and optical properties of joint nanomaterials are investigated by both experiments and theoretical simulations. Strong coupling between light and plasmonic waves is evident in welded nanostructures. We display prototype plasmonic devices such as high resolution SERS probes and nanowaveguides.