V.V. Kashirin - Junior Research Scientist, National Research University of information technologies, mechanics and optics. E-mail: kashirin.victor@gmail.com
S.V. Ivanov - Ph. D., Senior Research Scientist, National Research University of information technologies, mechanics and optics. E-mail: sergei.v.ivanov@gmail.com
A.V. Boukhanovsky - Dr. Sci., Professor, Leading Research Scientist, National Research University of information technologies, mechanics and optics. E-mail: avb_mail@mail.ru