Natalia MANICHEVA
@op.edu.ua
Institute of Medical Engineering / Department of Biomedical Engineering
Odesа Polytechnic National University
RESEARCH, TEACHING, or OTHER INTERESTS
Biomedical Engineering, Biophysics, Acoustics and Ultrasonics
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Mikhaylo Vasnetsov, Valeriy Voytsekhovich, Vladislav Ponevchinsky, Nataliia Kachalova, Alina Khodko, Oleksanr Mamuta, Volodymyr Pavlov, Vadym Khomenko, and Natalia Manicheva
Politechnika Lubelska
The paper is a report of an experimental study to suppress the speckle structure of a coherent optical field. The technique proposed is based on the reduction of the temporal coherence utilizing enriching the output spectrum of Nd:YVO4 laser with intra-cavity second harmonic generation by additional emission lines. Temperature-controlled simultaneous emission of two components at 1.063 mm and 1.066 mm with nearly equal intensities in IR is achived. In the second-harmonic output the emission lines 531.7 nm, 532.3 nm and 532.8 nm were recorded. The influence of the spectrum variation on the formation of a speckle field was checked. Successfully removed intensity zeros and reduced contrast (visibility) from 0.92 to 0.65 in a light scattered by a ground glass diffuser at the angle 35°. A simple consideration of the speckle field dumping mechanism is presented.
ANTON PANDA, , NATALIA MANICHEVA, YURIJ DUDZINSKII, NATALIIA TITOVA, , , and
MM Publishing, s.r.o.
The two constructions for measurement of cavitations threshold in fluid are presented. The elastic underwater jet's membranes as the model of uniflow and counter flow sensor are considered. The basic frequency of membrane’s auto vibration depending on characteristics of fluid and geo¬metric parameters of construction is calculated. The nu¬merical calculations and experimental re¬sults are compared.
Yu. M. Dudzinskii, A. O. Sukharkov, and N. V. Manicheva
Begell House
A. A. Nazarenko, Yu. M. Dudzinskii, and N. V. Manicheva
Begell House