Experimental study of a reason for depolarization of laser light scattered from a rough surface

Vladimir Ya. Mendeleev; Sergey N. Skovorod'ko

doi:10.1117/12.455200

5 February 2002 Experimental study of a reason for depolarization of laser light scattered from a rough surface

Vladimir Ya. Mendeleev, Sergey N. Skovorod'ko

Proceedings Volume 4607, Selected Papers from Fifth International Conference on Correlation Optics; (2002) https://doi.org/10.1117/12.455200
Event: Fifth International Conference on Correlation Optics, 2001, Chernivsti, Ukraine

Abstract

The study is carried out for a unidirectional rough steel surface with rms roughness of 1.77 micrometers and rms slope of roughness of 0.135 rad. The degree of depolarization of scattered laser light with wavelength of 0.6328 micrometers was measured with a polarometer in the specular direction in the angular range of 30 - 80 degree(s). For laser light linearly polarized at a 45 degree(s) angle to the plane of incidence, the dependence of the measured degree of depolarization on angle of incidence has one maximum equal to 0.1 and an angle of incidence corresponding to the maxima is 70 degree(s). It is found experimentally that the reason for the measured depolarization is spatial variations of the azimuth and the ellipticity of the fully polarized scattered light within a polarometer aperture. Computer simulation of the scattering from a one-dimensional rough surface satisfactorily describing the dependence of the measured degree of depolarization on angle of incidence up to 70 degree(s) inclusive shows the single scattering makes the main contribution to the dependence of the measured degree of depolarization on angle of incidence.

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Vladimir Ya. Mendeleev and Sergey N. Skovorod'ko "Experimental study of a reason for depolarization of laser light scattered from a rough surface", Proc. SPIE 4607, Selected Papers from Fifth International Conference on Correlation Optics, (5 February 2002); https://doi.org/10.1117/12.455200

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