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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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High-repetition rate 1-J green laser system.

K Tei1, M Kato, F Matsuoka

  • 1Advanced Photon Research Center, Kansai Research Establishment, Japan Atomic Energy Research Institute, Shirakata, Tokai-mura, Naka-gun Ibaraki-ken 319-11, Japan. tei@apr.jaeri.go.jp

Applied Optics
|March 8, 2008
PubMed
Summary
This summary is machine-generated.

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A novel laser system provides high-energy pulses for advanced laser applications. This high-repetition-rate Nd:YAG laser enables terawatt-class Ti:sapphire chirped pulse amplification, achieving 2-J pulses at 100 Hz.

Area of Science:

  • Laser Physics
  • High-Power Lasers
  • Nonlinear Optics

Background:

  • High-average-power laser systems are crucial for scientific research and industrial applications.
  • Ti:sapphire chirped pulse amplification (CPA) systems require robust and efficient pumping sources.
  • Nd:YAG lasers are commonly used for pumping but often lack the required repetition rate or energy.

Purpose of the Study:

  • To develop a high-repetition-rate laser-diode-pumped Nd:YAG oscillator-amplifier system.
  • To utilize this system as a pumping source for a terawatt Ti:sapphire CPA laser.
  • To achieve high-energy fundamental and frequency-doubled laser pulses at 100 Hz.

Main Methods:

  • Development of a zigzag slab Nd:YAG oscillator-amplifier.
  • Pumping the Nd:YAG system with laser diodes for high efficiency.

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  • Utilizing a diffusion-bonded KTP crystal for frequency doubling.
  • Integration with a Ti:sapphire CPA system.

    • Main Results:

    • Generation of >2-J fundamental laser pulses at 100 Hz repetition rate.
    • Achieved 1-J frequency-doubled pulses using a KTP crystal at 100 Hz.
    • Demonstrated a high-average-power pumping source for terawatt-class lasers.

    Conclusions:

    • The developed Nd:YAG laser system is a viable high-energy, high-repetition-rate pumping source.
    • This system enables efficient pumping of high-average-power terawatt Ti:sapphire CPA lasers.
    • The results pave the way for advanced applications requiring high-power ultrashort laser pulses.