1. Petersburg Nuclear Physics Institute NRC “Kurchatov Institute”, Orlova roshcha, 188300 Gatchina, Russia
2. Nanotechnology Research and Education Centre of the Russian Academy of Sciences, St. Petersburg Academic University, 194021 St. Petersburg, Russia
3. Department of Physics, Saint Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia
4. Institut Pascal, PHOTON-N2, University Clermont Auvergne, CNRS, 4 avenue Blaise Pascal, 63178 Aubière Cedex, France
5. Ioffe Physical-Technical Institute of the Russian Academy of Sciences, 194021 St. Petersburg, Russia