Orbital angular momentum crosstalk of single photons propagation in a slant non-Kolmogorov turbulence channel

► We analyze the probability models of the orbital angular momentum crosstalk of single photons propagation through non-Kolmogorov low-order turbulent atmospheric. ► We find that the turbulent tilt is the dominant aberration which causes the orbital angular momentum crosstalk, the coma is second and the astigmatism is third, but the defocus aberration has no impact on OAM. ► The results indicate that the regularities of orbital angular momentum crosstalk caused by the tilt, the coma and the astigmatism are almost the same.