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Related Experiment Video

Updated: Sep 6, 2025

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Femtosecond Pulsed Fiber Laser Based on Graphdiyne-Modified Tapered Fiber.

Qing Wu1, Si Chen2,3, Wenli Bao2

  • 1Heilongjiang Province Key Laboratory of Laser Spectroscopy Technology and Application, Harbin University of Science and Technology, Harbin 150080, China.

Nanomaterials (Basel, Switzerland)
|June 24, 2022
PubMed
Summary

Graphdiyne quantum dots were used to create a fiber laser saturable absorber, achieving femtosecond pulse output. This demonstrates graphdiyne

Keywords:
femtosecond pulsegraphdiynesaturable absorbertapered fiber

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Area of Science:

  • Photonics
  • Materials Science
  • Quantum Optics

Background:

  • Saturable absorbers are crucial for generating ultrashort pulses in fiber lasers.
  • Graphdiyne is a novel carbon allotrope with unique electronic and optical properties.

Purpose of the Study:

  • To investigate the application of graphdiyne-modified tapered fibers as saturable absorbers in an erbium-doped fiber laser.
  • To achieve femtosecond pulse output using a graphdiyne-based all-fiber saturable absorber.

Main Methods:

  • Graphdiyne quantum dots were synthesized using the Glaser-Hay method.
  • A graphdiyne-based saturable absorber was fabricated using modified tapered fibers.
  • The device was integrated into an erbium-doped fiber laser cavity.

Main Results:

  • The graphdiyne saturable absorber demonstrated strong saturable absorption with a modulation depth of 18.06% and saturation intensity of 103.5 W.
  • The erbium-doped fiber laser produced femtosecond pulses with a bandwidth of 26.3 nm and a pulse width of 135.8 fs.
  • A single pulse energy of 54 pJ was achieved.

Conclusions:

  • Graphdiyne-based saturable absorbers are effective for generating femtosecond pulses in fiber lasers.
  • This research highlights the potential of graphdiyne as a nonlinear optical material for ultrafast photonics applications.