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Related Experiment Videos

1 J/pulse Q-switched 2 microm solid-state laser.

Jirong Yu1, Bo C Trieu, Ed A Modlin

  • 1NASA Langley Research Center, Mail Stop 468, Hampton, Virginia 23681, USA. jirong.yu@larc.nasa.gov

Optics Letters
|February 25, 2006
PubMed
Summary

This study demonstrates a diode-pumped Ho: Tm: LuLF laser achieving 1.1 J/pulse Q-switched output at 2.053 micrometers. This breakthrough surpasses the joule per pulse barrier for 2-micrometer lasers, showcasing high efficiency and excellent beam quality.

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Area of Science:

  • Laser Physics
  • Materials Science
  • Optical Engineering

Background:

  • High-energy pulsed lasers are crucial for various applications.
  • Achieving high pulse energy in the 2-micrometer wavelength range presents unique challenges.
  • Previous Q-switched 2-micrometer lasers have not reached the joule per pulse energy level.

Purpose of the Study:

  • To develop a diode-pumped laser system capable of high-energy Q-switched output at 2.053 micrometers.
  • To break the joule per pulse energy barrier for Q-switched 2-micrometer lasers.
  • To evaluate the system's efficiency and beam quality.

Main Methods:

  • Utilized a master-oscillator-power-amplifier (MOPA) architecture.
  • Employed a diode-pumped Ho: Tm: LuLF laser with a side-pumped rod configuration.

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  • Operated the laser in a Q-switched mode.

    • Main Results:

    • Achieved a Q-switched output of 1.1 J/pulse at 2.053 micrometers.
    • Demonstrated a total system efficiency of 5% for single-pulse and 6.2% for double-pulse operation.
    • Obtained an excellent beam quality of 1.4 times transform-limited.

    Conclusions:

    • The developed Ho: Tm: LuLF laser system successfully exceeded the joule per pulse energy threshold for Q-switched 2-micrometer lasers.
    • The MOPA architecture and diode-pumping strategy proved effective for high-energy laser generation.
    • The system's high efficiency and superior beam quality indicate its potential for advanced applications.