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10 October 2020 Monte Carlo simulation of modulation of randomly rough surfaces to linearly polarized lights
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Abstract
The surface of target is thought of as random rough surface at laser wavelength scale, which can modulate the incident light, and the information of material and texture of which is carried by the scattered light. Understanding this modulation is helpful to improve the accuracy of target recognition. In this paper, a large number of random rough surfaces were generated to simulate the surface of target by frequency domain filtering, and the statistical stability of Stokes vector of scattered light was obtained by Monte Carlo method. The results showed that the intensity and peak position of the scattered light had obviously difference under different polarized incident light. As the angle between the polarized direction of the incident light and the incident plane changed, the scattered light from the dielectric rough surface remained linearly polarized, however the scattered light from the metal rough surface turned elliptically polarized. We believed that the research could provide a new criterion for laser detection and measurement system to distinguish the materials and roughness of targets.
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Yuxiang Jiang and Zhenhua Li "Monte Carlo simulation of modulation of randomly rough surfaces to linearly polarized lights", Proc. SPIE 11546, Advanced Laser Processing and Manufacturing IV, 115460V (10 October 2020); https://doi.org/10.1117/12.2574964
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