Helical Polariton Lasing from Topological Valleys in an Organic Crystalline Microcavity

• DOI: 10.1002/advs.202203588
• Publication Date: 2022-08-22T01:45:15Z
• Authors: Teng Long; Xuekai Ma; Jiahuan Ren; Feng Li; Qing Liao; Stefan Schumacher; Guillaume Malpuech; Dmitry Solnyshkov; Hongbing Fu
• Keywords: Helicity

Topological photonics provides an important platform for the development of photonic devices with robust disorder-immune light transport and controllable helicity. Mixing photons excitons (or polaritons) gives rise to nontrivial polaritonic bands chiral modes, allowing manipulation helical lasers in strongly coupled light-matter systems. In this work, polariton lasing from topological valleys organic anisotropic microcrystalline cavity based on tailored local band geometry is demonstrated. This laser emits different helicity along angular directions. The significantly enhanced characteristics are achieved by nonlinear relaxation process. Helical may provide a perfect exploration novel phenomena that involve interaction polariton-based spintronic devices.