Abstract
Computation of Mueller matrix elements by infrared scattering from randomly rough two-dimensional surfaces and results of a method for graphic display of the data are presented. A full wave electromagnetic scattering model first generates raw data elements of the 4 × 4 Mueller matrix in beam backscattering angle (θ) ranging from normal to oblique incidence, in refractive index of the beam scatterer (nλ − ikλ) spanning the 9 ≤ λ ≤ 12.5 μm midinfrared band, and in mean-squared slope (σS2) and mean-squared height (〈h2〉) of the scattering surface. These data are next compressed into a graphics format file occupying considerably less computer storage space and mapped into color images of the Mueller elements as viewed on a high-resolution graphics terminal. The diagonal and two off-diagonal elements are animated in the λ–θ plane according to variations in σS2 and 〈h2〉. Predicted elements for polarized IR beam energies on vibrational resonance of the surface molecules, and particularly the off-diagonal elements, show subtle properties of the scatterer as viewed in the animation sequences.
© 1993 Optical Society of America
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