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Micromachines
Volume 14
Issue 1
10.3390/mi14010038
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Article

Nonparaxial Propagation of Bessel Correlated Vortex Beams in Free Space

by
Nikolai I. Petrov
Scientific and Technological Centre of Unique Instrumentation of the Russian Academy of Sciences, 117342 Moscow, Russia
Micromachines 2023, 14(1), 38; https://doi.org/10.3390/mi14010038
Submission received: 3 December 2022 / Revised: 18 December 2022 / Accepted: 20 December 2022 / Published: 23 December 2022
(This article belongs to the Special Issue Non-diffractive Beams for the State of the Art Applications)
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Abstract

The nonparaxial propagation of partially coherent beams carrying vortices in free space is investigated using the method of decomposition of the incident field into coherent diffraction-free modes. Modified Bessel correlated vortex beams with the wavefront curvature are introduced. Analytical expressions are presented to describe the intensity distribution and the degree of coherence at different distances. The evolution of the intensity distribution during beam propagation for various source parameters is analyzed. The effects of nonparaxiality in the propagation of tightly focused coherent vortex beams are analyzed.
Keywords: diffraction-free beams; partially coherent light; free space nonparaxial propagation; vortex beams; coherent mode representation diffraction-free beams; partially coherent light; free space nonparaxial propagation; vortex beams; coherent mode representation

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MDPI and ACS Style

Petrov, N.I. Nonparaxial Propagation of Bessel Correlated Vortex Beams in Free Space. Micromachines 2023, 14, 38. https://doi.org/10.3390/mi14010038

AMA Style

Petrov NI. Nonparaxial Propagation of Bessel Correlated Vortex Beams in Free Space. Micromachines. 2023; 14(1):38. https://doi.org/10.3390/mi14010038

Chicago/Turabian Style

Petrov, Nikolai I. 2023. "Nonparaxial Propagation of Bessel Correlated Vortex Beams in Free Space" Micromachines 14, no. 1: 38. https://doi.org/10.3390/mi14010038

APA Style

Petrov, N. I. (2023). Nonparaxial Propagation of Bessel Correlated Vortex Beams in Free Space. Micromachines, 14(1), 38. https://doi.org/10.3390/mi14010038

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