Intensity angular correlations of light multiply scattered from random rough surfaces

Journal Article · Thu Dec 31 23:00:00 EST 1992 · Journal of the Optical Society of America, Part A: Optics and Image Science; (United States)

DOI:https://doi.org/10.1364/JOSAA.10.000150· OSTI ID:6708773

Nieto-Vesperinas, M; Sanchez-Gil, J A ^[1]

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1. Consejo Superior de Investigaciones Cientificas, Madrid (Spain)

The intensity angular correlation function in multiple scattering of electromagnetic waves from randomly rough one-dimensional interfaces that separate a vacuum from a perfect conductor is studied by numerically solving the scattering equations that are based on the extinction theorem boundary condition. The so-called memory effect, discussed elsewhere for dense random media, is encountered, and its angular width is found to be considerably larger than for volume scattering. Comparisons are also made with situations for which the Kirchhoff approximation holds. In addition, because of the small number of asperities of the surface samples dealt with in the computations, a new enhanced long-range correlation of width reciprocal to the mean free path is found as a result of constructive interference between waves whose wave vector is the sum or difference of initial and final wave vectors and wave vectors that are due to time-reversed paths. The origin of this correlation effect, in that it is due to multiple scattering, is analogous to that of the peak of enhanced backscattering for the mean scattered intensity and arises from the non-Gaussian second-order statistics of the scattered field. 39 refs., 7 figs.

• OSTI ID: 6708773
• Journal Information: Journal of the Optical Society of America, Part A: Optics and Image Science; (United States), Journal Name: Journal of the Optical Society of America, Part A: Optics and Image Science; (United States) Vol. 10:1; ISSN 0740-3232; ISSN JOAOD6
• Country of Publication: United States
• Language: English

Related Subjects

661300 -- Other Aspects of Physical Science-- (1992-)
664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR CORRELATION
BACKSCATTERING
CORRELATIONS
ELECTROMAGNETIC PULSES
ELECTROMAGNETIC RADIATION
INTERFACES
INTERFERENCE
MEAN FREE PATH
MULTIPLE SCATTERING
ONE-DIMENSIONAL CALCULATIONS
PULSES
RADIATIONS
ROUGHNESS
SCATTERING
SURFACE PROPERTIES
SURFACES
TENSORS
VECTORS