Light interference in the diffraction field of a spatially modulated laser beam behind a random phase object

Vladimir P. Ryabukho; Vladimir L. Khomutov; Olga P. Arshuk; Anatoly A. Chaussky; Irina F. Terent'eva

doi:10.1117/12.226745

10 November 1995 Light interference in the diffraction field of a spatially modulated laser beam behind a random phase object

Vladimir P. Ryabukho, Vladimir L. Khomutov, Olga P. Arshuk, Anatoly A. Chaussky, Irina F. Terent'eva

Author Affiliations +

Proceedings Volume 2647, International Conference on Holography and Correlation Optics; (1995) https://doi.org/10.1117/12.226745
Event: International Conference on Holography and Correlation Optics, 1995, Chernivsti, Ukraine

Abstract

The diffraction of a laser beam with spatial amplitude-phase modulation in the form of a regular interference pattern behind a random phase object is studied. The interference effects of correlation of speckle-fields formed in the zone of diffraction are considered. To physically interpret the observed effects, there has been employed the concept of interference of mutually shifted partially developed identical speckle fields. The evolution of visibility of average intensity fringes formed in the scattered field has been studied for the objects with different statistical parameters including objects with an oscillating correlation coefficient of phase inhomogeneities. The correlation properties of formed partially developed speckle fields are considered for an illuminating Gaussian beam with an account of the observed interference effects. It has been shown that under certain conditions the form of variation of the fringe visibility coincides with the form of the correlation coefficient of the complex amplitude of the boundary field (the field in the plane, located in the immediate vicinity to the object plane) and, hence, is uniquely defined by inhomogeneities parameters of the object: by standard deviation, correlation radius and correlation coefficient form. The application possibilities of the considered processes for diagnostics of phase scattering objects complying with the model of a random phase screen are discussed.

Citation Download Citation

Vladimir P. Ryabukho, Vladimir L. Khomutov, Olga P. Arshuk, Anatoly A. Chaussky, and Irina F. Terent'eva "Light interference in the diffraction field of a spatially modulated laser beam behind a random phase object", Proc. SPIE 2647, International Conference on Holography and Correlation Optics, (10 November 1995); https://doi.org/10.1117/12.226745

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