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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 68, Iss. 3 — Mar. 1, 1978
  • pp: 323–328

Explanation of the experimental results of light backscattered from a very rough surface

C. C. Sung and W. D. Eberhardt  »View Author Affiliations

JOSA, Vol. 68, Issue 3, pp. 323-328 (1978)

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We have calculated reflected and refracted electromagnetic waves from a rough surface with the boundary conditions exactly satisfied. The surface model consists of three parameters: the dimension of the independent cells, h; the parameter in the slope distribution function of the tangent plane t0; and the average radius of curvature of the surface, R. Within the reasonable range of these parameters, we have calculated the polarized component P and the depolarized component D measured by Renau et al. and have found the following features of the scattering of the reflected wave from a rough surface that have not been previously explained theoretically. (i) P and D have very different angular dependences. (ii) Whereas P is a sensitive function of t0, D is almost independent of t0. (iii) D does not vanish at all angles. A qualitative comparison between the data and the calculation is given.

© 1978 Optical Society of America

C. C. Sung and W. D. Eberhardt, "Explanation of the experimental results of light backscattered from a very rough surface," J. Opt. Soc. Am. 68, 323-328 (1978)

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  1. J. D. Jackson, Classical Electrodynamics (Wiley, New York, 1975). We follow the scattering geometry in Jackson.
  2. J. Renau, R. K. Cheo, and H. G. Cooper, J. Opt. Soc. Am. 57, 459 (1967).
  3. G. J. Wilhelmi, J. W. Rouse, Jr., and A. J. Blanchard, J. Opt. Soc. Am. 65, 1036 (1975).
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  5. A. K. Fung, Planet. Space Sci. 14, 563 (1966).
  6. A. K. Fung and H. L. Chan, IEEE Trans. Antennas Propag. 17, 590 (1969).
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  11. S. O. Rice, Commun. Pure Appl. Math. 4, 351 (1951).
  12. C. C. Sung and J. A. Holzer, Appl. Phys. Lett. 28, 429 (1976); ibid., J. Appl. Phys. 48, 1739 (1977).
  13. Ref. 6 is intended to fit the experimental data on Ref. 2 as a function of the incident angle θ, but the solution does not satisfy the boundary conditions. It should be pointed out that since the data are simple functions of θ, it is easy to fit the data with several parameters even if the calculations are based on poor approximations.
  14. C. C. Sung and W. D. Eberhardt, J. Appl. Phys. (to be published).

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