Inverse scattering methods applied to nonlinear optical component design

Freeman C. Lin; Michael A. Fiddy

doi:10.1117/12.179741

8 July 1994 Inverse scattering methods applied to nonlinear optical component design

Freeman C. Lin, Michael A. Fiddy

Proceedings Volume 2241, Inverse Optics III; (1994) https://doi.org/10.1117/12.179741
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

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.

Citation Download Citation

Freeman C. Lin and Michael A. Fiddy "Inverse scattering methods applied to nonlinear optical component design", Proc. SPIE 2241, Inverse Optics III, (8 July 1994); https://doi.org/10.1117/12.179741

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