A.V. Nazarov - Ph. D. (Eng.), Associate Professor, Head of Department, Yu.Ye. Sedakov Research Institute of Measuring Systems (Nizhniy Novgorod). E-mail: physics@nntu.nnov.ru N.A. Novoselova - Ph. D. (Eng.), Associate Professor, Nizhny Novgorod State Technical University n.a. R.E. Alekseev. E-mail: physics@nntu.nnov.ru S.B. Raevsky - Dr. Sc. (Eng.), Professor, Honored Scientist of RF, Nizhny Novgorod State Technical University n.a. R.E. Alekseev. E-mail: physics@nntu.nnov.ru