1. Institute for Micro and Nanotechnologies/Institute
of Chemistry and Biotechnology, Technical University Ilmenau, Gustav-Kirchhof-Strasse 1, Ilmenau, Germany
2. Institute of Physical Chemistry
and Abbe School of Photonic, Friedrich-Schiller-University Jena, Helmholtzweg 4, Jena, Germany
3. Institute of Photonic Technology Jena, Albert-Einstein-Strasse 9, Jena, Germany
4. University of Strasbourg, 4 rue Blaise Pascal – CS 90032 – F-67081 Strasbourg
cedex, France