Reflectance for an approximately one-dimensional rough surface that has rms roughness greater than a wavelength

Vladimir Ya. Mendeleev; Sergey N. Skovorod'ko

doi:10.1117/12.547689

19 February 2004 Reflectance for an approximately one-dimensional rough surface that has rms roughness greater than a wavelength

Vladimir Ya. Mendeleev, Sergey N. Skovorod'ko

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Proceedings Volume 5381, Lasers for Measurements and Information Transfer 2003; (2004) https://doi.org/10.1117/12.547689
Event: Lasers for Measurements and Information Transfer 2003, 2003, St. Petersburg, Russian Federation

Abstract

A relation between the intensity reflectances of approximately one-dimensional and one-dimensional rough surfaces within the diffraction solid angle in the specular direction for normal incidence is derived for an rms roughness greater than a wavelength. The relation shows that the reflectance of an approximately one-dimensional rough surface is proportional to the reflectance of a one-dimension rough surface. The validity of the derived relation is studied for an approximately one-dimensional rough steel surface with an rms roughness of 1.3 μm and a correlation length of 15.2 μm. The wavelength was 0.6328 μm and the angle of incidence was 4°. The reflectance of the rough steel surface was measured and estimated from the derived relation. Satisfactory agreement was found between the estimated and measured reflectance values.

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Vladimir Ya. Mendeleev and Sergey N. Skovorod'ko "Reflectance for an approximately one-dimensional rough surface that has rms roughness greater than a wavelength", Proc. SPIE 5381, Lasers for Measurements and Information Transfer 2003, (19 February 2004); https://doi.org/10.1117/12.547689

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KEYWORDS

Reflectivity

Scattering

Diffraction

Light scattering

Solids

Electromagnetic scattering theory

Photometry

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