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Switchable Multicolor Single-Mode Lasing in Polymer-Coupled Microfibers.

Kun Ge1,2, Zishu Zhou3, Songtao Li2

  • 1College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China.

Polymers
|November 13, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed switchable single-mode microlasers using coupled microfiber cavities. This novel approach enables multicolor output with high spectral purity, overcoming limitations of previous multimode systems for photonic applications.

Keywords:
microfibersmulticolorpolymersingle mode lasing

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Area of Science:

  • Photonics and Optical Engineering
  • Materials Science

Background:

  • Switchable multicolor microlasers are vital for advanced photonic devices.
  • Existing multicolor lasers often suffer from multimode operation, limiting practical use due to poor mode selectivity.

Purpose of the Study:

  • To achieve switchable single-mode lasing with multicolor output and high spectral purity.
  • To overcome the limitations of multimode operation in switchable multicolor microlasers.

Main Methods:

  • Utilized coupled microfiber cavities where each microfiber acts as a WGM resonator and mode filter.
  • Demonstrated the unique mode selection mechanism experimentally and theoretically.
  • Tuned the lasing color by doping microfibers with different active materials.

Main Results:

  • Successfully achieved switchable single-mode lasing in coupled microfiber cavities.
  • Demonstrated a novel mode selection mechanism within the coupled microfiber system.
  • Showcased tunable single-mode lasing colors through material doping.

Conclusions:

  • Developed a novel platform for switchable single-mode multicolor microlasers.
  • The coupled microfiber cavity design offers an effective mode selection mechanism.
  • This work advances photonic integration and the development of versatile laser sources.