[1] Institute of Physics, Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, Szczecin, Al. Piastów 48, Szczecin,70-311, Poland
[2] Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, Szczecin, Szczecin,70-310, Poland
[3] Karlsruhe Institute of Technology, Institute for Technical Physics, Eggenstein-Leopoldshafen,76344, Germany