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Proceedings Paper

Inverse scattering methods applied to nonlinear optical component design
Author(s): Freeman C. Lin; Michael A. Fiddy
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Paper Abstract

A random medium model is applied to study propagation and multiple scattering of laser beams in nonlinear media containing microparticles. Refractive indices of these nonlinear media are considered to be isotropic and intensity-dependent. After applying a probabilistic model, we obtain an autocorrelation function with exponential-decay shape for the random medium assuming a two-phase mixture. Using the parabolic approximation, we have calculated the mean value of the intensity-dependent part of refractive index from the mutual coherence function. The Feynman diagrammatic technique, bilocal, and distorted-wave Born approximations are then invoked to formulate a Fourier relationship between the autocorrelation function and the forward scattered field of the incident light beam. Finally, our Fourier-based inversion algorithm is employed to extract information about the medium from the measured scattered field data.

Paper Details

Date Published: 8 July 1994
PDF: 12 pages
Proc. SPIE 2241, Inverse Optics III, (8 July 1994); doi: 10.1117/12.179741
Show Author Affiliations
Freeman C. Lin, Univ. of Massachusetts/Lowell (United States)
Michael A. Fiddy, Univ. of Massachusetts/Lowell (United States)

Published in SPIE Proceedings Vol. 2241:
Inverse Optics III
Michael A. Fiddy, Editor(s)

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