Abstract
A comprehensive series of speckle experiments is described for opal glass diffusers ranging in thickness from 10 to 500 μm. Wavelength decorrelation measurements are made using a cw dye laser source; and accurate square-law detection is provided by the use of an optic-fiber, photomultiplier combination rather than film. For this diffuser set intensity distribution functions, polarized and unpolarized, are plotted. Second-order correlation functions are presented for different apertures, relating diffuser motion and probe motion. Remote texture determination using contrast ratio and frequency decorrelation is illustrated.
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Research supported in part by the Air Force Office of Scientific Research.
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George, N., Jain, A. & Melville, R.D.S. Experiments on the space and wavelength dependence of speckle. Appl. Phys. 7, 157–169 (1975). https://doi.org/10.1007/BF00936019
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DOI: https://doi.org/10.1007/BF00936019