Characterization of vortex beams synthesized on the basis of a fiber laser array

V. P. Aksenov; V. V. Dudorov; V. V. Kolosov

doi:10.1117/12.2206152

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19 November 2015 Characterization of vortex beams synthesized on the basis of a fiber laser array

V. P. Aksenov, V. V. Dudorov, V. V. Kolosov

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Proceedings Volume 9680, 21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics; 96802D (2015) https://doi.org/10.1117/12.2206152
Event: XXI International Symposium Atmospheric and Ocean Optics. Atmospheric Physics, 2015, Tomsk, Russian Federation

Abstract

A technique for generation of optical vortex beams with a variable orbital angular momentum on the basis of a fiber laser array is suggested. The technique is based on controlling the radiation phase of individual subapertures of the array. Requirements for parameters of a device for vortex beam generation are determined (the number and size of subapertures and their arrangement). The propagation dynamics of a vortex beam synthesized is compared with that of a continuous vortex beam in free space and in a turbulent atmosphere. Spectral properties of a beam synthesized, which is represented as a superposition of different azimuth modes, are determined during its free-space propagation. It is shown that energy and statistical parameters coincide for synthesized and continuous vortex beams when propagating through a turbulent medium.

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V. P. Aksenov, V. V. Dudorov, and V. V. Kolosov "Characterization of vortex beams synthesized on the basis of a fiber laser array ", Proc. SPIE 9680, 21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics, 96802D (19 November 2015); https://doi.org/10.1117/12.2206152

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