AVERAGE IRRADIANCE AND IRRADIANCE VARIANCE OF LASER BEAMS IN TURBULENT MEDIA

Authors
  1. Bissonnette, L.R.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN)
Abstract
A semi-empirical model of laser beam propagation in turbulence is written in the form of a closed set of second-order partial differential equations for the first- and second-order amplitude moments. The equations are linear, contain only algebraic coefficients, and are uniformly valid over the complete propagation range. The hypothesis of normal probability distribution of the complex wave amplitude is shown to be consistent with the stochastic wave equation, and is used to obtain the irradiance variance in terms of the first- and second-order amplitude moments. Solutions for average irradiance and irradiance variance profiles of laser beams are easily and quickly calculated by a numerical finite difference method. Predictions agree very well with experimental data in the atmosphere and in a simulation medium.
Report Number
DREV-4104/78 —
Date of publication
15 May 1978
Number of Pages
60
DSTKIM No
78-02082
CANDIS No
82772
Format(s):
Hardcopy;Originator's fiche received by DSIS

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