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Updated: May 23, 2026

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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Highly efficient 2 μm Tm:YAG ceramic laser.

W L Gao1, J Ma, G Q Xie

  • 1Department of Physics, Key Laboratory for Laser Plasmas (Ministry of Education), Shanghai Jiao Tong University, Shanghai, China.

Optics Letters
|March 27, 2012
PubMed
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We achieved a highly efficient 2 μm thulium-doped yttrium aluminum garnet (Tm:YAG) ceramic laser, reaching a record 65% slope efficiency. This Tm:YAG ceramic laser also demonstrated tunable multi-wavelength operation.

Area of Science:

  • Laser Physics
  • Materials Science

Background:

  • Thulium-doped Yttrium Aluminum Garnet (Tm:YAG) lasers are crucial for applications requiring 2 μm wavelength emission.
  • Developing highly efficient and tunable Tm:YAG lasers is an ongoing research objective.

Purpose of the Study:

  • To experimentally demonstrate a highly efficient diode-pumped Tm:YAG ceramic laser.
  • To investigate the wavelength tuning characteristics and potential for multi-wavelength operation.

Main Methods:

  • Utilized a diode-pumped Tm:YAG ceramic gain medium.
  • Performed laser output power and slope efficiency measurements.
  • Conducted wavelength tuning experiments.

Main Results:

  • Achieved a maximum output power of 6.05 W.

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  • Realized a record-high slope efficiency of 65% for Tm:YAG ceramic lasers.
  • Demonstrated simultaneous multi-wavelength operation across the 1884-2017 nm range.

    • Conclusions:

    • The diode-pumped Tm:YAG ceramic laser exhibits excellent efficiency and output power.
    • Tm:YAG ceramic lasers are capable of tunable and multi-wavelength operation, broadening their applicability.