1. Department Chemie and Center for Applied Photonis, University of Konstanz, 78457 Konstanz, Germany
2. GRINTECH GmbH, Schillerstr. 1, 07745 Jena, Germany
3. Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745 Jena, Germany
4. Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Albert-Einstein-Str. 6, 07745 Jena, Germany
5. Neurosurgery, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
6. Clinical Sensoring and Monitoring, Anesthesiology and Intensive Care Medicine, Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany