We have shown that when sharply focusing a linearly polarized optical vortex with topological charge 2. in the near-axis region of the focal plane. not only does a reverse energy flow (the negative on-axis projection of the Poynting vector) occur. but also the right-handed circular polariza-tion of light. https://www.inmuebleslasmercedes.com/product-category/butcher-knives/