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Related Experiment Video

Updated: Jul 9, 2026

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

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Laser operation with nearly diffraction-limited output from a Yb:YAG multimode channel waveguide.

U Griebner1, H Schönnagel

  • 1Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Rudower Chaussee 6, D-12489 Berlin, Germany.

Optics Letters
|December 13, 2007
PubMed
Summary

We achieved laser action in a novel crystal channel-waveguide laser using Ytterbium-doped Yttrium Aluminum Garnet (Yb:YAG). This new design demonstrates efficient, nearly diffraction-limited performance with low threshold and up to 1-W output power.

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Area of Science:

  • Solid-state lasers
  • Integrated optics
  • Materials science

Background:

  • Crystal channel-waveguide lasers offer potential for compact and efficient laser sources.
  • Diffusion bonding is a technique for fabricating complex optical structures.

Purpose of the Study:

  • To demonstrate laser action in a diffusion-bonded Yb:YAG-YAG crystal channel-waveguide laser.
  • To investigate the performance characteristics, including output power and beam quality.
  • To study the effect of waveguide properties on resonator modes.

Main Methods:

  • Fabrication of a diffusion-bonded Yb:YAG-YAG core-cladding structure.
  • Side-pumping the channel-waveguide geometry using diode bars.
  • Characterization of laser output power, threshold, and beam quality.

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Last Updated: Jul 9, 2026

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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  • Utilizing a nearly concentric resonator to study mode behavior.

    • Main Results:

    • Achieved laser action with up to 1-W output power.
    • Demonstrated a low threshold for laser operation.
    • Observed nearly diffraction-limited performance with a 100-mum rectangular core.
    • Investigated the influence of waveguide guiding properties on the resonator mode.

    Conclusions:

    • The diffusion-bonded Yb:YAG-YAG crystal channel-waveguide laser is a viable and efficient laser source.
    • The channel-waveguide geometry enables high-quality beam output.
    • Further studies on waveguide properties can optimize laser performance.