Berlin 2008 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 36: Poster III

HL 36.22: Poster

Wednesday, February 27, 2008, 16:30–19:00, Poster D

Propagation of electromagnetic waves in waveguides based on photonic/plasmonic structures in nanocomposite glass — •Oleksiy Kiriyeko, Moritz Beleites, Stefan Wackerow, Wolfram Hergert, and Heinrich Graener — Institute of Physics, Martin Luther University Halle-Wittenberg, Von-Seckendorff-Platz 1, 06120 Halle

Nanocomposite glass containing metallic nanoparticles is a basis material of plasmonic structures with particular optical properties. Periodic structures are experimentally produced in such a material using an electric field assisted dissolution method. Laser assisted dissolution or modification of nanoparticle containing areas is an elegant way to form waveguides in the twodimensional periodic structures. The finite element method (FEM) implemented in COMSOL/Multiphysics is used to calculate the complex effective permittivity of a two-component material in which equally-sized silver nanoparticles are randomly distributed in a homogeneous dielectric, which is the glass matrix in our case. The properties of different waveguides in triangular lattices in such a nanocomposite glass are investigated. Special attention is devoted to the influence of changes of the geometric structure or of the nanoparticle filling fraction on the waveguide properties. The theoretical investigations are compared with experimental results.