1. Karlsruhe Institute of Technology (KIT) Light Technology Institute (LTI) Engesserstrasse 13 Karlsruhe 76131 Germany
2. Innovation Lab Speyerer Strasse 4 Heidelberg 69115 Germany
3. Karlsruhe Institute of Technology (KIT) Institute of Microstructure Technology (IMT) Hermann‐von‐Helmholtz‐Platz 1 Eggenstein‐Leopoldshafen 76344 Germany
4. Technische Universität Darmstadt Otto‐Berndt‐Straße 3 Darmstadt 64287 Germany