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Assembly Orientation Engineering of Organic Microcrystal Laser for Modulating Cavity Dimension.

Yinan Yao1,2, Shizhe Ren3,2, Yong Sheng Zhao3,2

  • 1State Key Laboratory of Structural Chemistry, CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.

ACS Applied Materials & Interfaces
|May 16, 2025
PubMed
Summary

Researchers engineered organic microcrystal assembly to control microcavity dimensions. This innovation enables versatile low-threshold micro/nanolasers, including 3D whispering gallery mode and 1D Fabry-Pérot mode lasers for photonic circuits.

Keywords:
dimensional engineeringmicrolasermultidimensional crystalsnanophotonicsself-assembly

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Area of Science:

  • Materials Science
  • Optics
  • Nanotechnology

Background:

  • Modulating micro/nanolaser cavity dimensions is key for versatile applications.
  • Traditional molecular crystal fabrication limits optical cavities to low-dimensional, anisotropic structures with high lasing thresholds.

Purpose of the Study:

  • To develop a strategy for engineering the assembly orientation of organic microcrystals.
  • To achieve flexible modulation of microcavity dimensions for micro/nanolasers.

Main Methods:

  • Employing isotropic and anisotropic assembly orientations for organic microcrystals.
  • Fabricating one-dimensional (1D) microbelts and three-dimensional (3D) microspheres.

Main Results:

  • 3D microspheres exhibit whispering gallery mode lasing with low thresholds due to spherical morphology and strong light confinement.
  • 1D microbelts act as Fabry-Pérot mode lasers, utilizing lateral faces as cavities.
  • Demonstrated distinct lasing actions from different-dimensional microcavity structures.

Conclusions:

  • The proposed assembly orientation engineering provides a method for flexible microcavity dimension control.
  • This approach facilitates the development of multidimensional micro/nanolasers.
  • Offers insights for creating advanced integrated photonic circuits.