Robust Transmission of Pin-Like Vortex Beams in Plasma Sheath Turbulence

This study investigates the propagation characteristics of pin-like vortex beams (PLVBs) traversing plasma sheath turbulence, employing the random phase-screen method. We compare the transmission performances of PLVBs with conventional Laguerre-Gaussian beams (LGBs) in terms of intensity dispersion, detection probability of orbital angular momentum, bit error rate (BER), and channel capacity. Our results show that PLVBs outperform LGBs in plasma sheath turbulence, with detection probabilities 9%-12.5% higher and BER 0.03-0.067 lower across propagation distances ranging from 0.1 to 0.4 m. Additionally, PLVBs exhibit enhanced channel capacity compared to LGBs, demonstrating the superior robustness of PLVBs against plasma sheath turbulence. We further examine the impact of the beam modulation parameter and wavelengths on the performance of PLVBs, revealing that the higher beam modulation parameter and longer wavelengths reduce BER and increase channel capacity. These findings suggest the potential of PLVBs as robust candidates for optical communication in turbulent plasma environments.