Berlin 2015 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 50: Coupled Nanostructures and Light Localization
O 50.9: Vortrag
Mittwoch, 18. März 2015, 12:30–12:45, MA 043
Localization of Light in ZnO Nano-Forests — •David Leipold1, Manfred Maschek2, Martin Silies2, Christoph Lienau2, and Erich Runge1 — 1Technische Universität Ilmenau, Germany — 2Carl von Ossietzky Universität Oldenburg, Germany
The localization of waves due to multiple scattering is a particularly interesting phenomenon. In this contribution we present several aspects of ongoing research in light localization. Earlier, we reported hot spots in the second harmonic generation in random ZnO nano-needle arrays[1]. These were interpreted as due to the localization of light by multiple scattering. We compare theoretical results of electromagnetic calculations to the experiments in order to give further insight to the formation of localized optical near-fields. While the 3D calculations reproduce various aspects of the experimental results very well, the open-boundary 2D calculations proof the coexistence of propagating and lossy localized modes[2].
[1] M. Maschek et al., Nature Photonics 6, 293 (2012)
[2] D. Leipold et al., Annalen der Physik 525, 199 (2013)