Vortex beam formation by means of control of the piston shift of a fiber array

V. P. Aksenov; V. V. Atuchin; V. V. Dudorov; V. V. Kolosov; M. E. Levitsky; T. D. Petukhov

doi:10.1117/12.2550555

11 December 2019 Vortex beam formation by means of control of the piston shift of a fiber array

V. P. Aksenov, V. V. Atuchin, V. V. Dudorov, V. V. Kolosov, M. E. Levitsky, T. D. Petukhov

Proceedings Volume 11322, XIV International Conference on Pulsed Lasers and Laser Applications; 1132214 (2019) https://doi.org/10.1117/12.2550555
Event: XIV International Conference on Pulsed Lasers and Laser Applications (AMPL-2019), 2019, Tomsk, Russian Federation

Abstract

The intermediate results of the experiment on vortex laser beam synthesis based on coherent combining laser subbeams formed by a fiber collimators array are presented. The wave field results from interference of individual subbeams in this case and is determined by the phase relationships between them. A functional diagram of the experimental setup is given. The experimental results of synthesis of a laser beam with an orbital angular momentum are described. It is suggested to use a spiral phase plate to determine the sign of the topological charge of an optical vortex; the efficiency of this approach is estimated.

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V. P. Aksenov, V. V. Atuchin, V. V. Dudorov, V. V. Kolosov, M. E. Levitsky, and T. D. Petukhov "Vortex beam formation by means of control of the piston shift of a fiber array", Proc. SPIE 11322, XIV International Conference on Pulsed Lasers and Laser Applications, 1132214 (11 December 2019); https://doi.org/10.1117/12.2550555

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