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Related Experiment Video

Updated: May 18, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
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Tm:LiYF4 planar waveguide laser at 1.9 μm.

Western Bolanos1, Florent Starecki, Abdelmjid Benayad

  • 1Centre de Recherche sur les Ions, les Matériaux et la Photonique (CIMAP), UMR 6252 CEA-CNRS-Ensicaen, Université de Caen, 6 Boulevard Maréchal Juin, 14050, Caen-France.

Optics Letters
|October 3, 2012
PubMed
Summary

Continuous wave laser operation was achieved in Tm(3+)-doped YLiF(4) (Tm:YLF) waveguide lasers. This demonstrates record efficiency and output power for 2 μm spectral range waveguide lasers.

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Area of Science:

  • Optics and Photonics
  • Materials Science

Background:

  • Thulium-doped crystalline fluoride materials are promising for 2 μm laser applications.
  • Waveguide lasers offer compact and efficient laser sources.

Purpose of the Study:

  • To demonstrate continuous wave laser operation in liquid-phase epitaxially (LPE) grown Tm(3+)-doped YLiF(4) (Tm:YLF) waveguide layers.
  • To achieve high efficiency and output power in the 2 μm spectral range.

Main Methods:

  • Fabrication of Tm:YLF waveguide layers using liquid-phase epitaxy (LPE).
  • Pumping the waveguide laser with a Ti:Sapphire laser at 780 nm.
  • Characterization of laser performance, including output power and efficiency.

Main Results:

  • Demonstrated continuous wave laser operation at 1.87 μm.

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  • Achieved an output power of 560 mW.
  • Obtained a high efficiency of 76% with respect to absorbed pump power.

    • Conclusions:

    • This work presents the first Tm(3+)-doped crystalline fluoride waveguide laser.
    • The results establish a new record for efficiency and output power in LPE-grown waveguide lasers operating in the 2 μm range.