There is still great interest in the determination of microtopographic properties of rough metallic surfaces from light scattering measurements. According to Beckmann–Kirchhoff theory a clear relationship is established between the in-plane angular scattered light intensity and the statistical properties of the surface. We discuss one way to invert this relationship, and we introduce a new iterative procedure to retrieve the height autocorrelation function even for a very rough metallic surface (rms surface roughness of the same order of the optical wavelength). The procedure is eventually applied to the experimental data of a known metallic surface for validation.
Light scattering from a rough metal surface: theory and experiment / LI VOTI, Roberto; Leahu, Grigore; Gaetani, S; Sibilia, Concetta; Violante, V; Castagna, E; Bertolotti, Mario. - In: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. B, OPTICAL PHYSICS. - ISSN 0740-3224. - STAMPA. - 26:(2009), pp. 1585-1593. [10.1364/JOSAB.26.001585]
Light scattering from a rough metal surface: theory and experiment
LI VOTI, Roberto
Primo
;LEAHU, GRIGORE;SIBILIA, Concetta;BERTOLOTTI, Mario
2009
Abstract
There is still great interest in the determination of microtopographic properties of rough metallic surfaces from light scattering measurements. According to Beckmann–Kirchhoff theory a clear relationship is established between the in-plane angular scattered light intensity and the statistical properties of the surface. We discuss one way to invert this relationship, and we introduce a new iterative procedure to retrieve the height autocorrelation function even for a very rough metallic surface (rms surface roughness of the same order of the optical wavelength). The procedure is eventually applied to the experimental data of a known metallic surface for validation.File | Dimensione | Formato | |
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