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Engineering turbulence resilience in Bessel-Vortex beams through partial coherence and topological charge pairing
Jalil Jafari Dashkasan1, Rasoul Aalipour1, Mohammad Yeganeh2
1Department of Physics, Azarbaijan Shahid Madani University, Tabriz, 53714-161, Iran.
Scientific Reports
|May 27, 2026
Summary
Dual partially coherent Bessel-Vortex beams offer superior control over atmospheric turbulence effects like scintillation. Engineered topological charge pairing enhances optical resilience for free-space communication and quantum technologies.
Area of Science:
- Optics and Photonics
- Free-Space Optical Systems
Background:
- Atmospheric turbulence significantly degrades free-space optical communication performance.
- Existing methods using single beams or partial coherence have limitations in mitigating turbulence-induced scintillation.
Purpose of the Study:
- To investigate the effectiveness of dual partially coherent Bessel-Vortex beams in controlling atmospheric turbulence.
- To explore the impact of engineered topological charge pairing on optical resilience.
Main Methods:
- Generation of single and dual partially coherent Bessel-Vortex beams using a spatial light modulator (SLM).
- Propagation through a laboratory turbulence chamber simulating Kolmogorov statistics.
- Simultaneous encoding of beam profiles and turbulence phases onto a single SLM hologram.
Main Results:
- Dual beams with co-signed topological charges show increasing resilience with charge difference.
- Counter-signed pairs exhibit a non-monotonic response, with minimal resistance at a specific charge difference.
- Beams with equal-magnitude opposite charges show monotonic degradation in resilience, unlike single-vortex systems.
Conclusions:
- Dual topological charge pairing is a novel design parameter for enhancing turbulence resilience in optical systems.
- This approach offers significant implications for free-space optical communication, quantum information transfer, and optical manipulation.
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