Realization of Lasing Emission from the Different Perovskite Quantum Dot-Doped Materials

The experimental results were compared with the different perovskite quantum dot-doped materials, which explicitly include losses, gain, lasing, and threshold. The random lasers emerge multiple emission peaks at different central wavelengths, due to the recurrent optical gain feedback and the localized field resonance effect in vicinity of particles. By the operation of the applied different devices, the perovskite quantum dots can be better materials for generating photons and can create stronger light scattering for transition from incoherent lasing to coherent lasing. Contrary to conventional random lasers, we found that the nature of the random lasing is dictated by the perovskite quantum dots, and the quantum dots with a high refractive index can be advantageous for random lasing in mediums. The experiments also reveal a regime including the fundamental aspects of surface plasmon resonance light scattering for facile active lasing mode switching. These results will guide future design of different quantum dot random lasers with controlled lasing wavelength output.