Abstract

Controlling emission by means of combined plasmonic and photonic modes has shown very promising results in the last years [1] with applications in several fields as laser devices or biosensing. Recently [2,3], it has been demonstrated that mixed structures formed by self-assembled photonic crystals based on monolayers of spheres and metallic substrates provide an easy-implementation fabrication method to obtain large emission enhancements as well as controllable angular emission patterns. It has also been demonstrated that large tunability can be easily achieved by means of after-grown polymeric spheres modifications [4]. Using a plasma etching technique, accurate control over the final diameter of the spheres and, as a consequence, over the optical response of the samples, can be achieved.

© 2011 Optical Society of America