1. Institute of Molecular Physics, PAS, Smoluchowskiego 17, 60-179 Poznań, Poland
2. Institute of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
3. Kazan Physical Technical Institute, RAS, Sibirskii trakt 10/7, 420 029 Kazan, Russia
4. Kazan Technological Institute, Sibirskii trakt 12, 420 029 Kazan, Russia