Intrinsic Meron Spin Textures in Generic Focused Fields

Author(s): Di Liu, Han Liu, and Zheng Xi Optical spin textures with nontrivial topology hold promise for structured light and photonic information processing, yet their generation typically relies heavily on externally structured light with care. This raises questions about their universal existence and true robustness. Here, we uncover an… [Phys. Rev. Lett. 136, 073801] Published Fri Feb 20, 2026