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Proceedings Paper

Polarized light-scattering measurements of polished and etched steel surfaces
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Paper Abstract

The directional dependence of the intensity and polarization of light scattered by a series of steel surfaces was measured. The samples differ by polishing procedure. Theories for light scattering from microroughness and permittivity variations are reviews and used to interpret the results. It is shown that the experimental data can be fit to a combination of the two scattering mechanisms, whereby the relative amplitude of the two scattering sources and the complex degree of correlation are treated as adjustable parameters. The fits show at low degree of correlation at high spatial frequencies. This correlation has a characteristic phase, common for all of the samples. Comparison at the fitted roughness power spectral density (PSD) functions with those obtained by atomic force microscopy (AFM) showed reasonable but not perfect agreement. This study demonstrates how measurements of the polarization of scattered light can be used to quantify the scatter from two different scattering sources.

Paper Details

Date Published: 26 September 2000
PDF: 8 pages
Proc. SPIE 4100, Scattering and Surface Roughness III, (26 September 2000); doi: 10.1117/12.401654
Show Author Affiliations
Thomas A. Germer, National Institute of Standards and Technology (United States)
Thomas Rinder, Univ. of the Federal Armed Forces (Germany)
Hendrik Rothe, Univ. of the Federal Armed Forces (Germany)


Published in SPIE Proceedings Vol. 4100:
Scattering and Surface Roughness III
Zu-Han Gu; Alexei A. Maradudin, Editor(s)

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