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High efficient actively Q-switched Ho:LuAG laser.

Xiaoming Duan1, Baoquan Yao, Gang Li

  • 1National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin, China. dxm973@126.com

Optics Express
|December 10, 2009
PubMed
Summary
This summary is machine-generated.

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We achieved efficient room temperature Q-switched operation of a Holmium-doped Lu3Al5O12 (Ho:LuAG) laser at 2.1 micrometers. This laser demonstrated high output power and efficiency, with a minimum pulse width of 33.0 ns.

Area of Science:

  • Laser Physics
  • Solid-State Lasers
  • Quantum Electronics

Background:

  • Holmium-doped lasers are crucial for various applications, including medical and industrial uses.
  • Developing efficient room-temperature solid-state lasers is a key area of research.
  • The 2.1 micrometer wavelength range is significant for specific spectroscopic and medical applications.

Purpose of the Study:

  • To investigate the Q-switched performance of a Ho:LuAG laser at room temperature.
  • To determine the optimal operating parameters for efficient laser output.
  • To characterize the laser's power, efficiency, and pulse properties at 2.1 micrometers.

Main Methods:

  • Utilized a Holmium-doped Lu3Al5O12 (Ho:LuAG) crystal as the gain medium.
  • Implemented a Q-switching technique to achieve pulsed laser operation.

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  • Operated the laser system at room temperature and a repetition rate of 10 kHz.
  • Measured average output power, slope efficiency, and pulse width.

    • Main Results:

    • Achieved maximum average output power of 9.9 W.
    • Obtained a high slope efficiency of 69.9% with respect to absorbed pump power.
    • Recorded a minimum pulse width of 33.0 ns.
    • Calculated a peak power of 30.0 kW.

    Conclusions:

    • Demonstrated efficient room-temperature Q-switched operation of a Ho:LuAG laser at 2.1 micrometers.
    • The Ho:LuAG laser shows significant potential for applications requiring high-power, pulsed laser sources at this wavelength.
    • The obtained performance metrics highlight the suitability of Ho:LuAG for demanding laser applications.