1. Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm sq. 7, 6720 Szeged, Hungary
2. Department of Materials Science, Interdisciplinary Excellence Centre, University of Szeged, 6720 Szeged, Dugonics sq. 13, Hungary
3. Department of Optics and Quantum Electronics, University of Szeged, Dóm sq. 9, 6720 Szeged, Hungary
4. Department of Applied and Nonlinear Optics, Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, 1121 Konkoly-Thege M. way 29-33, Budapest, Hungary