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Graphdiyne-Based All-Solid-State Passively Q-Switched Tm:YAP Laser at 2 μm.

Qing Wu1, Yanyu Wang1, Gang Zhao1

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

Nanomaterials (Basel, Switzerland)
|August 12, 2023
PubMed
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Graphdiyne (GDY) was used as a saturable absorber in a Tm:YAP laser, achieving the shortest pulse duration and highest repetition frequency to date. This demonstrates GDY

Area of Science:

  • Optoelectronics
  • Laser Physics
  • Materials Science

Background:

  • All-solid-state Thulium (Tm) lasers offer advantages in wavelength range and output power.
  • Saturable absorbers are crucial for passively Q-switched (PQS) laser operation.
  • Graphdiyne (GDY) is an emerging optical nonlinear material with potential applications.

Purpose of the Study:

  • To investigate the performance of graphdiyne (GDY) as a saturable absorber in an all-solid-state Tm:YAP laser.
  • To achieve high repetition frequency and short pulse duration using GDY in a PQS laser system.
  • To demonstrate the nonlinear optical properties of GDY for optoelectronic applications.

Main Methods:

  • Synthesis of graphdiyne (GDY) via a cross-coupling method.
  • Integration of GDY as a saturable absorber into a Tm:YAP laser cavity.
Keywords:
all-solid-state lasergraphdiynepassively Q-switchedsaturable absorber

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  • Characterization of laser performance, including pulse duration, repetition frequency, and central wavelength.

    • Main Results:

    • Successful implementation of GDY as a saturable absorber in a Tm:YAP laser.
    • Achieved a shortest pulse duration of approximately 785 ns.
    • Obtained a repetition frequency of approximately 199.6 kHz at a central wavelength of 1985.8 nm.
    • Demonstrated the shortest pulse duration and highest repetition frequency for GDY in a solid-state Tm laser to date.

    Conclusions:

    • Graphdiyne (GDY) exhibits excellent nonlinear optical properties suitable for saturable absorbers.
    • The developed GDY-based PQS Tm:YAP laser shows significant advancements in pulse duration and repetition frequency.
    • GDY holds considerable promise for future optoelectronic devices and laser technologies.