11 January 2007 Spatial structure of radiation, scattered rough surface, and dependence of performances of dynamic speckle on size of roughness
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Proceedings Volume 6594, Lasers for Measurements and Information Transfer 2006; 65940L (2007) https://doi.org/10.1117/12.725602
Event: Lasers for Measurements and Information Transfer 2006, 2006, St. Petersburg, Russian Federation
Abstract
Is shown, that the field of a wave by a scattered rough surface, has the spatial distribution similar to a field of diffraction of a wave on an aperture, conterminous under the form and the size with illuminated area. A maximal intensity in diffractive orders form speckle pattern. Dependence of a time spectrum of intensity fluctuations, scattered by a moving surface of radiation, a spectrum of a dynamic speckle-structure, from size of a roughness is received. With use of dynamic speckles experimental measurement of base lengths and sizes of a root-mean-square roughness on these lengths is lead. Results of experiment have confirmed the offered model of a scattering and have shown an opportunity of simultaneous measurement of values of several base lengths and sizes of a roughness on the measured lengths.
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V. I. Bronnikov, "Spatial structure of radiation, scattered rough surface, and dependence of performances of dynamic speckle on size of roughness", Proc. SPIE 6594, Lasers for Measurements and Information Transfer 2006, 65940L (11 January 2007); doi: 10.1117/12.725602; https://doi.org/10.1117/12.725602
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