Coherence of the pseudo-Bessel beams propagating in turbulent atmosphere

Igor P. Lukin

doi:10.1117/12.2500153

13 December 2018 Coherence of the pseudo-Bessel beams propagating in turbulent atmosphere

Igor P. Lukin

Proceedings Volume 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 108330X (2018) https://doi.org/10.1117/12.2500153
Event: XXIV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2018, Tomsk, Russian Federation

Abstract

Coherence of the pseudo-Bessel optical beams during propagation in turbulent atmosphere are investigated. An analytical solution of the equation for the second-order mutual coherence function of the optical radiation field, which was obtained from paraxial approximation of the scalar wave equation, is considered. The modulus of the complex coherence degree (coherence degree), the phase of the complex coherence degree, the coherence radius, and the integral scale of the coherence degree of a Bessel-Gaussian optical beam and a conic optical wave are developed for different beam parameters and characteristics of the turbulent atmosphere. Quantitative and qualitative differences are discovered between the studied coherence characteristics of the Bessel-Gaussian optical beam and the conic optical wave. Comparison of investigated characteristics of a coherence of pseudo-Bessel optical beams: a Bessel-Gaussian beam and a conic wave, with similar characteristics of diffraction-free Bessel optical beam is realized. In general, under identical propagation conditions in the turbulent atmosphere, the coherence of a conic optical wave is higher than the coherence of a Bessel optical beam.

Citation Download Citation

Igor P. Lukin "Coherence of the pseudo-Bessel beams propagating in turbulent atmosphere", Proc. SPIE 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 108330X (13 December 2018); https://doi.org/10.1117/12.2500153

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KEYWORDS

Atmospheric optics

Coherence (optics)

Atmospheric propagation

Wave propagation

Beam propagation method

Axicons

Bessel beams

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