Propagation of Multiwavelength Laser Radiation through Atmospheric Turbulence
Final technical rept. 1 Dec 1973-1 Sep 1974
OREGON GRADUATE CENTER BEAVERTON
Pagination or Media Count:
This report reviews progress on understanding the short-term statistics of microthermal turbulence fluctuations and opticalinfrared scintillations, and their interrelationship. A complete analytical understanding of microthermal and scintillation data-spread and confidence intervals has been achieved, including the effects of microthermal-envelope probability distributions, integral scales, varying averaging times, and turbulence intermittency. A practical definition and model of intermittent turbulence is given and it is shown that the usual mathematical techniques may be applied. As an addendum to the preceding report on this program, which deals with turbulence effects on finite aperture laser illumination systems, the effective aperture size of an arbitrarily truncated gaussian beam is derived.
- Lasers and Masers
- Infrared Detection and Detectors