Abstract

Spherical nanoparticles with radii of 50-150 nm provide unique optical properties. They are characterized by strong Mie resonances within the visible range [1]. In a precise arrangement they can be used as building blocks of more complex optical elements. We developed a novel laser printing technique for the controlled fabrication of highly ordered nanoparticle arrays [2,3]. This technique allows to generate precisely designed ultra-flat lenses on the basis of spherical nanoparticles. A sophisticated design was developed using Mie calculations to control and optimize the focussing effect. A schematic drawing is given in figure 1. Each individual nanoparticle within this lens contributes to the focussing effect. Experimental realization has been carried out by a combination of prestructured material films and subsequent laser transfer.

© 2016 Optical Society of America