M.B. Goikhman – Junior Research Scientist, Institute of Applied Physics of RAS (N. Novgorod)

E-mail: goihman@appl.sci-nnov.ru

A.V. Gromov – Junior Research Scientist, Institute of Applied Physics of RAS (N. Novgorod)

E-mail: gromov@appl.sci-nnov.ru

N.F. Kovalev – Dr.Sc.(Phys.-Math.), Professor, Main Research Scientist, Institute of Applied Physics of RAS (N. Novgorod) E-mail: kovalev@appl.sci-nnov.ru

A.V. Palitsin – Ph.D.(Phys.-Math.), Head of Laboratory, Institute of Applied Physics of RAS (N. Novgorod) E-mail: pal@appl.sci-nnov.ru