1. Institute of Physical Chemistry Friedrich Schiller University Jena Helmholtzweg 4 07743 Jena Germany
2. Department Functional Interfaces Leibniz Institute of Photonic Technology Jena (Leibniz-IPHT) Albert-Einstein-Straße 9 07745 Jena Germany
3. Abbe Center of Photonics (ACP) Albert-Einstein-Straße 6 07745 Jena Germany
4. Institute of Physics and Computer Science Faculty of Applied Physics and Mathematics Gdańsk University of Technology Narutowicza 11/12 80233 Gdańsk Poland