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Updated: May 18, 2026

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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Femtosecond Yb:CaGdAlO4 thin-disk oscillator.

S Ricaud1, A Jaffres, K Wentsch

  • 1Laboratoire Charles Fabry, Institut d’Optique, CNRS, Univ Paris Sud 2, Avenue Augustin Fresnel, 91127 Palaiseau Cedex, France. sandrine.ricaud@institutoptique.fr

Optics Letters
|October 3, 2012
PubMed
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This study demonstrates the first mode-locked thin-disk laser using Ytterbium-doped Calcium Lithium Gallium Germanate (Yb:CALGO). It achieves ultrashort femtosecond pulses with high energy and broad tunability, advancing laser technology.

Area of Science:

  • Laser Physics
  • Materials Science

Background:

  • Mode-locked lasers are crucial for scientific research and industrial applications.
  • Thin-disk laser technology offers advantages in power scaling and thermal management.
  • Yb:CALGO is a promising gain medium for ultrashort pulse generation.

Purpose of the Study:

  • To demonstrate the first mode-locked thin-disk laser utilizing the Yb:CALGO crystal.
  • To characterize the laser's performance in terms of pulse duration, energy, and tunability.
  • To explore the potential of Yb:CALGO for generating ultrashort laser pulses.

Main Methods:

  • Utilized a Yb:CALGO crystal in a thin-disk laser configuration.
  • Implemented a mode-locking technique to generate ultrashort pulses.
  • Measured output power, pulse duration, pulse energy, and spectral characteristics.

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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
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Main Results:

  • Achieved 135 fs pulse durations with a spectrum centered at 1043 nm.
  • Obtained 300 fs pulses at 28 W average output power with 1.3 μJ pulse energy.
  • Demonstrated 197 fs pulses at 20 W average output power with 0.9 μJ pulse energy.
  • Showcased broad tunability from 1032 to 1046 nm with sub-200 fs pulses.

Conclusions:

  • The Yb:CALGO thin-disk laser is a viable platform for generating high-energy, ultrashort femtosecond pulses.
  • The demonstrated laser exhibits excellent performance and broad tunability, suitable for various applications.
  • This work paves the way for further development of Yb:CALGO based ultrashort pulse lasers.