1. Physics Department, St. Petersburg State University, St. Petersburg, Russia
2. Blagoveschensk State Pedagogical University, Blagoveschensk, Russia
3. Amur State University, Blagoveshchensk, Russia
4. Moscow Institute of Physics and Technology, Moscow, Russia
5. Department of Physics, National Cheng Kung University, Tainan, Taiwan
6. NSC Instrument Center at NCKU, Tainan, Taiwan