Innentitelbild: Circularly Polarized Lasing from a Microcavity Filled with Achiral Single‐Crystalline Microribbons (Angew. Chem. 9/2023)

Circularly polarized lasing with high dissymmetry factors has been realized in an organic crystal-filled cavity without any chiral materials or structures, as reported by Qing Liao, Hongbing Fu, and co-workers in their Research Article (e202213229). The anisotropic refractive properties of two-dimensional organic single crystals lead to the Rashba–Dresselhaus effect inducing spin-splitting of cavity modes. The results provide a new idea for the design of CP lasers towards future 3D laser displays, information storage, and other fields.