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Intensity of a focused beam in a turbulent medium

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1 Author(s)
Fante, R.L. ; Air Force Cambridge Research Laboratory, Bedford, Mass.

The effect of the strength of turbulence on the intensity distribution in the focal plane of a focused laser beam is studied. The intensity in the focal region is found to be unaffected by the turbulence provided Cn2< 0.45 k0-2S-5/6F-1, where Cnis the index of the refraction structure constant, k0is the signal wavenumber, S is the initial cross section of the beam, and F is the focal length.

Published in:

Proceedings of the IEEE  (Volume:62 ,  Issue: 10 )