Photonic orbital angular momentum in turbulence: vortex splitting and adaptive optics

Giacomo Sorelli; Vyaceslav N. Shatokhin; Andreas Buchleitner

doi:10.1117/12.2573474

20 September 2020 Photonic orbital angular momentum in turbulence: vortex splitting and adaptive optics

Giacomo Sorelli, Vyaceslav N. Shatokhin, Andreas Buchleitner

Proceedings Volume 11532, Environmental Effects on Light Propagation and Adaptive Systems III; 115320E (2020) https://doi.org/10.1117/12.2573474
Event: SPIE Remote Sensing, 2020, Online Only

Abstract

Recent works revealed that transmission of light beams carrying orbital-angular-momentum (OAM) through turbulence causes the optical vortex defining these beams to split into multiple vortices with unit topological charge. Here, we consider the numerical propagation of orbital-angular-momentum (OAM) modes through a horizontal atmospheric channel. By analysing the beam's phase front after transmission through turbulence, we confirm the occurence of vortex splitting, but we also witness the emergence of vortex-antivortex pairs. Moreover, by performing performing a decomposition of the transmitted wave into OAM modes, we show that while adaptive optics cannot cancel vortex splitting, it still is pretty efficient in diminishing the turbulence-induced crosstalk between different OAM modes.

Conference Presentation

Citation Download Citation

Giacomo Sorelli, Vyaceslav N. Shatokhin, and Andreas Buchleitner "Photonic orbital angular momentum in turbulence: vortex splitting and adaptive optics", Proc. SPIE 11532, Environmental Effects on Light Propagation and Adaptive Systems III, 115320E (20 September 2020); https://doi.org/10.1117/12.2573474

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