Dependence of characteristics of dynamic laser speckle patterns from roughness

V. I. Bronnikov

doi:10.1117/12.739996

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10 April 2007 Dependence of characteristics of dynamic laser speckle patterns from roughness

V. I. Bronnikov

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Proceedings Volume 6613, Laser Optics 2006: Wavefront Transformation and Laser Beam Control; 66130H (2007) https://doi.org/10.1117/12.739996
Event: Laser Optics 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 a diffraction 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, of scattered radiation by a moving surface from size of a roughness is received. With use of dynamic speckles experimental measurement of base lengths and 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 definition of ensembles of statistical parameters of a roughness.

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V. I. Bronnikov "Dependence of characteristics of dynamic laser speckle patterns from roughness", Proc. SPIE 6613, Laser Optics 2006: Wavefront Transformation and Laser Beam Control, 66130H (10 April 2007); https://doi.org/10.1117/12.739996

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