Recursive calculation of time-dependent multiple forward scattering: comparison between small-angle approximation and exact model

Konrad Altmann

doi:10.1117/12.21863

1 September 1990 Recursive calculation of time-dependent multiple forward scattering: comparison between small-angle approximation and exact model

Konrad Altmann

Author Affiliations +

Proceedings Volume 1312, Propagation Engineering: Third in a Series; (1990) https://doi.org/10.1117/12.21863
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

Abstract

A theoretical model proposed for calculating the space-time deformation of laser pulses due to multiple scattering in particulate media is improved by dropping the small-angle approximation and extending the validity of the model to the description of multiple scattering into a full solid angle. The problem is reduced to the computation of the generalized functions used in the model, carried out through the use of the recursive relations employed in the original model. For the dominant forward scattering, the deviation between the two models is found to be small. The strong dependence of pulse broadening on the angle of observation is emphasized. The results received are confirmed by applying the generalized functions to typical cases of forward scattering.

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Konrad Altmann "Recursive calculation of time-dependent multiple forward scattering: comparison between small-angle approximation and exact model", Proc. SPIE 1312, Propagation Engineering: Third in a Series, (1 September 1990); https://doi.org/10.1117/12.21863

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