*Jonas Berzins1,2, Simonas Indrišiūnas3, Stefan Fasold1, Olga Žukovskaja4, Michael Steinert1, Paulius Gečys3, Stefan M.B. Bäumer2, Frank Setzpfandt1, Thomas Pertsch1,5
(1. Friedrich Schiller University Jena, Germany, 2. TNO, the Netherlands, 3. Center for Physical Sciences and Technology, Lithuania, 4. Leibniz Institute of Photonic Technology Jena, Germany, 5. Fraunhofer Institute for Applied Optics and Precision Engineering, Germany)