Lead halide perovskite microlasers have been very promising for versatile optoelectronic applications. However, most perovskite microlasers are linearly polarized with uniform wavefront. The structured laser beams carrying orbital angular momentum have rarely been studied and the applications of perovskites in next-generation optical communications are thus hindered. Herein, we experimentally demonstrate the perovskite vortex microlasers with highly directional outputs and well−controlled topological charges. High quality gratings have been experimentally fabricated in perovskite film and the subsequent vertical cavity surface emitting lasers (VCSELs) with divergent angles of 3^o are achieved. With the control of Archimedean spiral gratings, the wavefront of the perovskite VCSELs has been switched to be helical with topological charges of q = −4 to 4. This research is able to expand the potential applications of perovskite microlasers in hybrid integrated photonic networks, as well as optical computing.

卤化铅钙钛矿微型激光器在多功能光电应用中非常有前途。然而，大多数钙钛矿微激光器是线性偏振的，具有均匀的波前。携带轨道角动量的结构化激光束很少被研究，因此阻碍了钙钛矿在下一代光通信中的应用。在此，我们通过实验证明了具有高度定向输出和可控拓扑电荷的钙钛矿涡旋微型激光器。在钙钛矿薄膜和随后的发散角为 3 ^{o 的}垂直腔面发射激光器 (VCSEL) 中实验制造了高质量的光栅达到。在阿基米德螺旋光栅的控制下，钙钛矿 VCSEL 的波前已转换为螺旋形，拓扑电荷为q  = -4 至 4。这项研究能够扩展钙钛矿微激光器在混合集成光子网络中的潜在应用，如以及光学计算。