Тhe holographic method for diagnostics of nanoparticles in dense nanosuspensions
V.I. Ivanov, A.V. Myagotin
Far Eastern State Transport University
DOI: 10.26456/pcascnn/2024.16.128
Short communication
Abstract: The efficiency of the recording dynamic holograms in dispersed liquid-phase media with a high concentration of nanoparticles is analyzed. The optical nonlinearity of the medium is due to the electrostriction forces acting on the particles of the dispersed phase in a gradient light field. Mass transfer is considered in the case of suprathermal radiation intensities, when the light-induced change in the concentration of nanoparticles is greater than the initial one and reaches saturation. It is shown that at high levels of the radiation intensity, the recording of a dynamic hologram is carried out in a significantly nonlinear mode, when the phase lattice becomes non-sinusoidal. At the same time, the amplitude of the first harmonic increases sharply with increasing intensity, which makes it possible to achieve a significant increase in the efficiency of the hologram recording. The results obtained are relevant for dynamic holography of dispersed liquid-phase media, as well as for optical diagnostics of such media.
Keywords: electrostriction, cubic nonlinearity, nanosuspension, dynamic holograms, suprathermal radiation intensity, optical diagnostics
- Valery I. Ivanov – Dr. Sc., Professor, Department of Physics and Theoretical Mechanics, Far Eastern State Transport University
- Artiom V. Myagotin – Senior Lecturer, Department of Physics and Theoretical Mechanics, Far Eastern State Transport University
Reference:
Ivanov, V.I. Тhe holographic method for diagnostics of nanoparticles in dense nanosuspensions / V.I. Ivanov, A.V. Myagotin // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2024. — I. 16. — P. 128-133. DOI: 10.26456/pcascnn/2024.16.128. (In Russian).
Full article (in Russian): download PDF file
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