Vortex Beam Lasing with Controllable Orbital Angular Momentum and Directivity from Laser-Fabricated Gear-Shaped Perovskite Microdisks

Details of the materials and methods used, mode analysis of the MAPbBr 3 microdisks, atomic-force microscopy analysis of the gear-shaped cavities, expanded data describing optimization procedure of laser excitation of the cavities, data on lasing thresholds of the uniform and gear-shaped WGM cavities of variable radius, schematics of the setup for SLM-assisted direct femtosecond laser printing of perovskite vortex emitting cavities and studying their lasing performance, data on calculated Q-factors of a gear-shaped microdisk, schematics explaining operation principle of the asymmetric gear-shaped cavity and the data on lasing properteis of asymmetric cavities tuned at l = 0, data on stability of cavity emission under multiple excitation cycles, and survey of key parameters of previously reported perovskite vortex micro-lasers in comparison with those demonstrated in this work (PDF)