Abstract

Metal nanoparticles (NPs) embedded in dielectric materials are artificial material systems with exciting optical properties. In particular, surface plasmon (SP) resonances observed in these materials, which are related to the size, shape and separation of the NPs, amongst other factors; enable the design of optical devices with a tailored spectral response, provided that a good control over the NP morphology is achieved during their synthesis. Among different fabrication methods, Pulsed Laser Deposition (PLD) is a powerful technique that allows producing single, multilayer and columnar NP structures [1,2]. However, an important drawback of PLD is the difficulty for producing NPs with well defined symmetry (spherical, oblate or prolate) and alignment [1]. In this work we have tackled this problem through fs-laser shaping of the produced nanostructures.

© 2013 IEEE