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Free keywords:
SCHELL-MODEL BEAMS; COHERENT ELECTROMAGNETIC BEAMS; CIRCULAR APERTURE;
THIN LENS; SWITCHES; LIGHT; PROPAGATION; INVARIANCE; ATMOSPHERE; LINESOptics; spectral shifts; atmospheric turbulence;
Abstract:
Using the concept of generalized beam, by applying the extended Huygens-Fresnel principle, we derive the spectrum for partially coherent cosh-Gaussian, cos-Gaussian, Gaussian and annular Gaussian beams propagating in turbulent media. From this formulation, graphical outputs are constructed illustrating the variation of receiver plane spectra against propagation distance, turbulence strength, degree of partial coherence and transverse coordinate. The dependence of spectral shifts on source and propagation parameters is observed. Spectrum invariance conditions are deduced analytically and discussed for the particular case of a fundamental Gaussian beam.
