Al-Ahsab, H. T., M. Cheng, I. G. H. Loqman, S. Kaid, and A. A. Alkelly. “Enhanced Focus Shaping of Circularly Polarized Laguerre–Gaussian Vortex Beams Using a Binary Axicon”. Sana’a University Journal of Applied Sciences and Technology, vol. 3, no. 3, June 2025, pp. 885-90, doi:10.59628/jast.v3i3.1761.