Journal
LIGHT-SCIENCE & APPLICATIONS
Volume 9, Issue 1, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41377-020-00376-7
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Funding
- National Natural Science Foundation of China [51632008, U1609219, 61721005]
- National Science Foundation of the United States [1407443]
- Welch Foundation [AX-1730]
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Multicolour single-mode polarized microlasers with visible to near-infrared output have very important applications in photonic integration and multimodal biochemical sensing/imaging but are very difficult to realize. Here, we demonstrate a single crystal with multiple segments based on the host-guest metal-organic framework ZJU-68 hierarchically hybridized with different dye molecules generating controllable single-mode green, red, and near-infrared lasing, with the lasing mode mechanism revealed by computational simulation. The segmented and oriented assembly of different dye molecules within the ZJU-68 microcrystal causes it to act as a shortened resonator, enabling us to achieve dynamically controllable multicolour single-mode lasing with a low three-colour-lasing threshold of similar to 1.72 mJ/cm(2)(approximately seven times lower than that of state-of-the-art designed heterostructure alloys, as reported by Fan F et al. (Nat. Nanotechnol. 10:796-803, 2015) considering the single pulse energy density) and degree of polarization >99.9%. Furthermore, the resulting three-colour single-mode lasing possesses the largest wavelength coverage of similar to 186 nm (ranging from similar to 534 to similar to 720 nm) ever reported. These findings may open a new route to the exploitation of multicolour single-mode micro/nanolasers constructed by MOF engineering for photonic and biochemical applications.
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