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Theory of laser beam intensity profile distortions in turbulent media
Author(s) -
Taylor Leonard S.
Publication year - 1977
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs012i005p00643
Subject(s) - optics , physics , turbulence , intensity (physics) , mean square , transverse plane , aperture (computer memory) , beam (structure) , mathematics , computational physics , mathematical analysis , mechanics , structural engineering , acoustics , engineering
Analytical expressions are obtained for the mean‐square n th moments of beam intensity profile, for the mean‐square perturbation of the spatial spectrum, and for the variance of intensity integrated over an aperture for finite beams propagating in turbulent media. The theory is based on the assumption of the existence of a phase autocorrelation which is a function of the transverse difference coordinates and is illustrated using the approximation of linear optics and the Rytov approximation. The theory can be applied to determine the capabilities of optical beam systems in the presence of turbulence.