Proceedings PaperThree-Dimensional Structure Of Fully Developed Laser Speckle Fields For Rectangular And Circular Diffuser Apertures
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The three-dimensional intensity correlation coefficient pi of speckled laser light fields reflected from diffuse scattering surfaces is calculated analytically and numerically for rectangular and circular apertures. μi is shown to be constituted by a Fresnel transform of the square modulus of the aperture function and is used to determine the average three-dimensional size of the speckle grains and its space dependence. General properties and special cases are discussed and compared with data reported by other authors. The results, several of which are stated for the first time, should give support in further developments of speckle metrology and holographic interferometry.