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Related Experiment Videos

High-performance diode-pumped Nd:YLF amplifier.

Ian N Ross1, Marta Csatári, Steve Hutchins

  • 1Central Laser Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, UK. i.n.ross@rl.ac.uk

Applied Optics
|March 6, 2003
PubMed
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This study presents a stable, high-gain diode-pumped amplifier. Its innovative design achieves significant amplification with excellent output consistency for laser applications.

Area of Science:

  • Laser Physics
  • Optical Engineering

Background:

  • Diode-pumped amplifiers are crucial for high-power laser systems.
  • Achieving high gain, efficiency, and stability simultaneously remains a challenge.

Purpose of the Study:

  • To develop and evaluate a multipass diode-pumped amplifier design.
  • To assess its performance in terms of gain, efficiency, and stability.

Main Methods:

  • Utilized a simple rod-cavity design for the amplifier.
  • Established quasi-steady-state operation for performance optimization.
  • Conducted Zernike analysis to evaluate pump distortion.

Main Results:

  • Achieved a saturated gain exceeding 6000.
  • Obtained an average output intensity of 7 kW/cm² during the pulse train.

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  • Demonstrated excellent output stability (0.2% rms short-term, 0.7% rms long-term).
  • Identified and characterized an astigmatic phase error for compensation.

    • Conclusions:

    • The multipass diode-pumped amplifier design offers high gain, efficiency, and stability.
    • The design is robust against input power fluctuations and allows for phase error compensation at high power levels.