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Updated: Jun 25, 2026

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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Tunable Yb:KYW laser using a transversely chirped volume Bragg grating.

Kai Seger1, Björn Jacobsson, Valdas Pasiskevicius

  • 1Laser Physics, KTH - Royal Institute of Technology, 10691 Stockholm, Sweden. ks@laserphysics.kth.se

Optics Express
|February 17, 2009
PubMed
Summary

We developed a tunable ytterbium-doped potassium tungstate (Yb:KYW) laser using a chirped volume-Bragg-grating for wavelength control. This compact laser system offers a wide tuning range and is broadly applicable to other laser designs.

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Area of Science:

  • Laser Physics
  • Materials Science

Background:

  • Diode-pumped solid-state lasers offer efficient light generation.
  • Wavelength tunability is crucial for various spectroscopic and photonic applications.

Purpose of the Study:

  • To demonstrate a diode-pumped Yb:KYW laser with tunable wavelength output.
  • To utilize a transversely chirped volume-Bragg-grating for wavelength control and output coupling.

Main Methods:

  • A diode-pumped Ytterbium-doped Potassium Tungstate (Yb:KYW) laser was constructed.
  • A transversely chirped volume-Bragg-grating was integrated for wavelength tuning and output coupling.
  • The grating was translated to achieve wavelength modulation.

Main Results:

  • The Yb:KYW laser achieved wavelength tuning from 997 nm to 1016 nm.

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  • A spectral bandwidth of 13 GHz was observed.
  • Output power reached up to 3.3 W.

    • Conclusions:

    • A simple, compact, and tunable diode-pumped Yb:KYW laser was successfully demonstrated.
    • The transversely chirped volume-Bragg-grating method provides effective wavelength control.
    • This tuning technique is adaptable to diverse laser systems.