Vol. 20, issue 08, article # 12

Gusev V.G. Formation of speckle interference patterns characterizing transversal or longitudinal displacements of a diffusely scattering surface. Part 1. // Atmospheric and oceanic optics. 2007. V. 20. No. 08. P. 670-680.
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Abstract:

The sensitivity of a speckle interferometer to transversal or longitudinal displacements of a diffusely scattering plane surface is analyzed in the case that a negative lens is used to record a double-exposure specklogram. It is shown that the interferometer sensitivity to transversal displacements depends on the curvature radius of a spherical wave of coherent radiation illuminating the surface. The interferometer sensitivity to longitudinal displacements depends on the scale of the Fourier transform of the function characterizing the complex amplitude of reflection or transmission of the scatterer. Experimental results are in agreement with theoretical arguments.

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