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Formation of speckle patterns characterizing the transverse or longitudinal displacement of a diffusely-scattering surface when using a Galileo telescope

Abstract

We analyze the sensitivity of a speckle interferometer to transverse or longitudinal displacements of a diffusely-scattering flat surface when a Galileo telescope is used at the stage of double-exposure speckle-gram recording. The interferometer sensitivity to transverse displacements is shown to depend on the magnitude and sign of the radius of curvature of the spherical wave front of coherent radiation illuminating the surface. The interferometer sensitivity to longitudinal displacements depends on the scale of the Fourier transform of the function that characterizes the complex amplitude of the reflection or transmission of the scatterer. The experimental results correspond to theoretical prerequisites.

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Correspondence to V. G. Gusev.

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Original Russian Text © V.G. Gusev, 2009, published in Optika Atmosfery i Okeana.

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Gusev, V.G. Formation of speckle patterns characterizing the transverse or longitudinal displacement of a diffusely-scattering surface when using a Galileo telescope. Atmos Ocean Opt 22, 214–226 (2009). https://doi.org/10.1134/S1024856009020134

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Keywords

  • Oceanic Optic
  • Speckle Pattern
  • Transverse Displacement
  • Longitudinal Displacement
  • Coherent Radiation