Multi-color single-mode polarized micro-lasers with visible to near-infrared outputs are very potential in photonic integration and multimodal biochemical sensing/imaging and yet to realize. Recently, scientists in China combined methods of in-situ assembly and homogeneous epitaxy to hierarchically assemble dye molecules with different gain bands in a single metal-organic framework (MOF) microcrystal, successfully realizing the multicolor single-mode polarized micro-laser with emission from green to near infrared.
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