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Related Experiment Video

Updated: Mar 21, 2026

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications
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Wavelength-Controlled Organic Microlasers Based on Polymorphism-Dependent Intramolecular Charge-Transfer Process.

Haiyun Dong1, Chunhuan Zhang1, Jiannian Yao1

  • 1Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China), University of Chinese Academy of Sciences, Beijing, 100049, China.

Chemistry, an Asian Journal
|May 10, 2016
PubMed
Summary

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Molecular N-Type Doping Unlocks Low-Threshold Nanosecond Lasing in a Microcavity-Integrated OLED Toward Electrically Pumped Organic Lasers.

Angewandte Chemie (International ed. in English)·2026

Researchers developed wavelength-tunable microlasers using organic microcrystals. By controlling crystal structure, they achieved different emission colors, paving the way for compact photonic devices.

Area of Science:

  • Optics and Photonics
  • Materials Science
  • Organic Electronics

Background:

  • Wavelength-tunable micro/nanoscale lasers are crucial for ultracompact photonic devices.
  • Organic materials' polymorphism allows for distinct emission colors, enabling wavelength tailoring.

Purpose of the Study:

  • To demonstrate wavelength-controlled microlasers utilizing polymorphism-dependent intramolecular charge-transfer (ICT) in organic microcrystals.
  • To explore the relationship between crystal structure, ICT process, and emission wavelength.

Main Methods:

  • Synthesized three distinct microstructures from the same organic ICT compound using varied solution-phase self-assembly techniques.
  • Characterized the microstructures to understand their crystal structures and molecular environments.
Keywords:
intramolecular charge transfernanophotonicspolymorphismstunable lasers

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  • Investigated the excited-state ICT process and emission wavelengths under two-photon pumping.
  • Main Results:

    • Achieved three different color lasing actions from the three types of organic ICT microcrystals.
    • Demonstrated that different crystal structures significantly influence the ICT process and emission wavelength.
    • Confirmed the polymorphism-dependent nature of wavelength control in organic microlasers.

    Conclusions:

    • The study provides a method for achieving wavelength-tunable microlasers through control of organic material polymorphism.
    • Offers insights for designing miniaturized lasers with specific performance characteristics.
    • Highlights the potential of ICT compounds in developing advanced photonic devices.