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Pure Metal-Organic Framework Microlasers with Controlled Cavity Shapes.

Yuanchao Lv1, Zhile Xiong1, Haiyun Dong2

  • 1Fujian Provincial Key Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China.

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Researchers engineered metal-organic framework (MOF) microlasers by controlling crystal shape. This shape-engineering approach enables tailored optical properties for advanced laser applications.

Keywords:
metal−organic frameworkmicrocavity effectmicrolasersnanophotonics

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Area of Science:

  • Materials Science
  • Optics
  • Nanotechnology

Background:

  • Metal-organic frameworks (MOFs) are promising laser materials.
  • Controlled fabrication of MOF nanostructures for optical microcavities is challenging.

Purpose of the Study:

  • To demonstrate shape-engineering of pure MOF microlasers.
  • To tune optical microcavities by controlling MOF crystal morphology.

Main Methods:

  • Selective fabrication of 1D microwires and 2D microplates using a coordination-mode-tailored method.
  • Adjusting HCl concentration to control coordination modes and crystal shape.
  • Characterization of lasing behaviors in different MOF microcrystal morphologies.

Main Results:

  • Successfully fabricated single-crystalline 1D MOF microwires and 2D MOF microplates.
  • Both morphologies exhibited low-threshold lasing due to strong optical confinement.
  • Demonstrated shape-dependent microcavity effects: 1D microwires acted as Fabry-Pérot resonators, and 2D microplates functioned as whispering-gallery-mode resonators.

Conclusions:

  • Shape-engineering via coordination-mode tailoring is effective for MOF microlaser fabrication.
  • Different MOF crystal morphologies lead to distinct microcavity modes (FP vs. WGM).
  • Provides a pathway for developing MOF-based micro/nanolasers with tunable functionalities.