P.N. Zakharov - Ph. D. (Phys.-Math.), Associate Professor, Faculty of Physics, M.V. Lomonosov Moscow State University. E-mail: zakharov1@mail.ru A.F. Korolev - Ph. D. (Phys.-Math.), Associate Professor, Faculty of Physics, M.V. Lomonosov Moscow State University. E-mail: korolev_phys@mail.ru E.V. Mitrofanov - Post-graduate Student, Graduate Research Scientist, Kotel\'nikov Institute of Radioengineering and Electronics of RAS. E-mail: mitrofanov_ireran@mail.ru V.A. Cherepenin - Dr. Sc. (Phys.-Math.), Professor, Corresponding Memeber of RAS, Deputy Director of Kotel\'nikov Institute of Radioengineering and Electronics of RAS. E-mail: cher@cplire.ru