Interferometric testing of random phase objects by focused spatially modulated beams

Vladimir P. Ryabukho; Anatoly A. Chaussky; Valery V. Tuchin

doi:10.1117/12.242169

10 June 1996 Interferometric testing of random phase objects by focused spatially modulated beams

Vladimir P. Ryabukho, Anatoly A. Chaussky, Valery V. Tuchin

Proceedings Volume 2802, Laser Chemistry, Biophysics, and Biomedicine; (1996) https://doi.org/10.1117/12.242169
Event: International Conference on Coherent and Nonlinear Optics, 1995, St. Petersburg, Russian Federation

Abstract

A new measuring technique of statistical parameters of transparent or reflecting random phase objects is discussed. The technique is based on the usage of the probing spatially-modulated laser beam (beam with regular interference pattern), focused on a moving object, and on measurement of contrast of average intensity fringes, formed in scattered dynamic speckle-modulated field. The behavior of the speckle field interference induced by the focused spatially-modulated laser beam diffraction on the random phase objects has been studied. The dependence of dynamic field average intensity fringes contrast on the object parameters has been established. The divergencies of the illuminating beam and the scattered light were taken into account.

Citation Download Citation

Vladimir P. Ryabukho, Anatoly A. Chaussky, and Valery V. Tuchin "Interferometric testing of random phase objects by focused spatially modulated beams", Proc. SPIE 2802, Laser Chemistry, Biophysics, and Biomedicine, (10 June 1996); https://doi.org/10.1117/12.242169

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