25 November 2014 Ring dislocation of a coherence of vortex Bessel beams in turbulent atmosphere
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Proceedings Volume 9292, 20th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 92921G (2014) https://doi.org/10.1117/12.2075104
Event: 20th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 2014, Novosibirsk, Russian Federation
Abstract
Researches of coherent properties of the vortex Bessel optical beams propagating in turbulent atmosphere are theoretically developed. The degree of coherence of vortex Bessel optical beams depending on beam parameters (crosssection wave number and a topological charge) and characteristics of turbulent atmosphere is in details analysed. It is shown, that at low levels of fluctuations in turbulent atmosphere, the degree of coherence of a vortex Bessel optical beam essentially depends on value of a topological charge of a beam. In the central part of a two-dimensional field of degree of coherence the ring dislocations, which number of rings to equally value of a topological charge of a vortex optical beam, is formed. At high levels of fluctuations in turbulent atmosphere, the degree of coherence of a vortex Bessel beam decreases much faster, than it takes place for the fundamental Bessel beam. And, speed of decrease essentially increases in process of growth of value of a topological charge of a beam.
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Igor P. Lukin, Igor P. Lukin, } "Ring dislocation of a coherence of vortex Bessel beams in turbulent atmosphere", Proc. SPIE 9292, 20th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 92921G (25 November 2014); doi: 10.1117/12.2075104; https://doi.org/10.1117/12.2075104
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