Structured lasing with disordered high-Q perovskite cavities

Nanoscale lasers with low thresholds and on-demand structured light output are essential for compact integrated photonic technology. Introducing engineered disorder into high quality-factor (Q) resonant cavities emerges as a promising route, yet the inaccurate disorder-to-phase correspondence and the limited symmetry breaking mechanisms restrict the achievable optical structures in output lasers. Here, by revealing translational disorder and rotational disorder as two decoupled symmetry-breaking mechanisms, we propose disorder-on-disorder (DoD) meta-cavities that allow for customizing eigenmodes for multichannel lasing emission control while preserving high-Q resonances. In the experiment, we structure perovskite into fully monolithic DoD meta-cavities to maximize mode-gain overlap and demonstrate structured lasing with low threshold (~7 microjoules per square centimeter), high Q (~10³), and diverse structured laser arrays including phase/polarization vortices, one-dimensional and two-dimensional Airy beams, and Hermite- and Laguerre-Gaussian beams. Our findings highlight DoD meta-cavity as a distinct and generalized route to compact monolithic high-Q photonic devices, opening opportunities in structured lasers, nonlinear optics, and integrated quantum photonics.