1. Institute of Particle Technology (LFG), University of Erlangen-Nuremberg, Cauerstrasse 4, 91058 Erlangen, Germany
2. Erlangen Graduate School in Advanced Optical Technologies (SAOT), University of Erlangen-Nuremberg, Paul-Gordan-Strasse 6, 91058 Erlangen, Germany
3. Cluster of Excellence—Engineering of Advanced Materials (EAM), University of Erlangen-Nuremberg, Nägelsbachstrasse 49b, 91052 Erlangen, Germany