Dynamic speckle interferometry of microscopic and macroscopic processes in deformable media

Abstract

The paper briefly considers the theory of the dynamic variant of optical speckle interferometry and its application to study in real time macroscopic and microscopic processes in deformable media. In the theoretical part, it is shown that it is convenient to study the macroscopic translational displacement, rotation and deformation of bodies by the movement of the whole picture of speckles and the shift of interference fringes of the two speckle fields, while the microscopic phenomena are conveniently studied by the change of the structure of speckle images. The paper presents some applications of original techniques developed by the author to determine rotations and strains of bodies under elastic and plastic deformations, to detect ultrasonic waves and to study the characteristics of crack initiation in high-cycle fatigue. Practical application of the developed techniques for testing macro-and microprocesses in living cells is shown. Keywords: speckles, speckle dynamics, speckle interferometry, displacement, deformation, rotation, damage, high-cycle fatigue, crack, residual life, living cells, metabolism.DOI: 10.17804/2410-9908.2015.6.027-057 References 1.Anisimov I.V., Kozel S.M., Lokshin G.R. Space-time statistical properties of coherent radiation scattered by a moving diffuse reflector. Optics and Spectroscopy, 1969, vol. 27, iss. 3, pp. 483-491. 2. Yoshimura T. Statistical properties of dynamic speckles. Journal of the Optical Society of America A, 1986America A, , vol. 3, no. 2, pp. 1032America A, -1054.Veselov L.M., Popov I.A. Information properties of a time-varying speckle pattern. Optics and Spectroscopy, 1993, vol. 74, iss. 6, pp.685-686. 4. Ruth B., Haina D., Waidelich W. Vibration analysis by speckle counting. Optica Acta: International Journal of Optics, 1983, vol. 30, iss. 6, pp. 841-848. DOI: 10.1080 Vladimirov A.P., Mikushin V.I. Interferometric determination of vector components of relative displacements: theory and experiment. In: Valery V. Tuchin, Vladimir P. Ryabukho, Dmitry A. Zimnyakov, eds. Saratov Fall Meeting '98: Light Scattering