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In past few years, while lead halide perovskite micro-lasers have been thoroughly studied, their performances at high excitation power have rarely explored. Here, we study the perovskite micro-lasers with high pumping density and explore the mechanism to improve their laser characteristics. By transferring a CH3NH3PbBr3 perovskite micro-rod onto a few-layered graphene slice, whispering gallery like...
Stimulated by the non-Hermitian nature of micro- and nanophotonic systems, modal interaction has been proposed to play a more essential role in controlling lasing actions. Here we demonstrate its impact on mode management in microcavity lasers. Single-mode laser emission with extinction ratio above 10 dB has been obtained in twin-microdisks with a radius about 40 µm. Unlike conventional single-mode...
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