Small-angle approximation to the transfer of narrow laser beams in anisotropic scattering media

Author:: Deepak, A.
Published:: Apr 1, 1981.
Physical Description:: 1 electronic document
Additional Creators:: Box, M. A.

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Summary:

The broadening and the signal power detected of a laser beam traversing an anisotropic scattering medium were examined using the small-angle approximation to the radiative transfer equation in which photons suffering large-angle deflections are neglected. To obtain tractable answers, simple Gaussian and non-Gaussian functions for the scattering phase functions are assumed. Two other approximate approaches employed in the field to further simplify the small-angle approximation solutions are described, and the results obtained by one of them are compared with those obtained using small-angle approximation. An exact method for obtaining the contribution of each higher order scattering to the radiance field is examined but no results are presented.

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OPTICS

Collection:

NASA Technical Reports Server (NTRS) Collection.

Note:

Document ID: 19810013375.
Accession ID: 81N21905.
M-345.
NASA-CR-3407.

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