Abstract
Experimental results from investigations of instantaneous intensity distributions in focused laser beams at 0.63 μm and 10.6 μm at a distance of approximately 5 km are presented and discussed. At 0.63 μm the beam pattern is broken into several diffraction-scale spots because focusing is saturated. At 10.6 μm the beam pattern is almost uniform. This is valid for beam dimensions smaller than the correlation length of the amplitude.
© 1975 Optical Society of America
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