Generalized theory of dynamical surfaces: experimental verification by speckle correlation

M. Fernanda Ruiz Gale; Néstor G. Gaggioli

doi:10.1117/12.666831

9 December 2005 Generalized theory of dynamical surfaces: experimental verification by speckle correlation

M. Fernanda Ruiz Gale, Néstor G. Gaggioli

Proceedings Volume 6024, ICO20: Optical Devices and Instruments; 60240P (2005) https://doi.org/10.1117/12.666831
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

This work studies rough surfaces that undergo small random morphological changes. In the present paper, rough reflective surfaces are dealt with. Its roughness is larger than the wavelength of the He-Ne laser beam used to illuminate it. Speckle correlation of the scattered light is applied to study changes in the roughness. A theoretical model, which describes speckle correlation as a decreasing quadratic exponential function of roughness changes and was presented in a previous paper, is used. New experimental results from rough reflective surfaces in which the changes are simulated through immersion of the samples in liquids with different refraction indices are presented. Good agreement between the theoretical and experimental results is found.

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M. Fernanda Ruiz Gale and Néstor G. Gaggioli "Generalized theory of dynamical surfaces: experimental verification by speckle correlation", Proc. SPIE 6024, ICO20: Optical Devices and Instruments, 60240P (9 December 2005); https://doi.org/10.1117/12.666831

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KEYWORDS

Speckle

Liquids

Reflectivity

Speckle pattern

Glasses

Light scattering

Refractive index

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