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Related Experiment Video

Updated: May 13, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
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Red and orange Pr3+:LiYF4 planar waveguide laser.

Florent Starecki1, Western Bolaños, Alain Braud

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

Optics Letters
|March 5, 2013
PubMed
Summary

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Researchers achieved room temperature continuous wave laser operation in red and orange wavelengths using Pr(3+)-doped LiYF(4) planar waveguides. This breakthrough offers potential for visible light applications.

Area of Science:

  • Optics and Photonics
  • Materials Science
  • Laser Physics

Background:

  • Praseodymium (Pr3+)-doped materials are promising for visible light lasers.
  • Planar waveguides offer compact and efficient laser designs.
  • Liquid phase epitaxy (LPE) is a technique for fabricating high-quality crystalline films.

Purpose of the Study:

  • To demonstrate room temperature continuous wave (CW) laser operation in the red and orange spectral regions.
  • To investigate the performance of Pr3+-doped LiYF4 planar waveguides.
  • To assess the potential of these waveguides for visible light laser applications.

Main Methods:

  • Fabrication of Pr3+-doped LiYF4 planar waveguides using liquid phase epitaxy (LPE).
  • Characterization of waveguide optical properties.

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Last Updated: May 13, 2026

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  • Pumping the waveguides with an optically pumped semiconductor laser at 479.2 nm.
  • Measurement of laser output power and slope efficiency at specific wavelengths.

    • Main Results:

    • Achieved room temperature CW laser operation at 639 nm (red) and 604 nm (orange).
    • Obtained output powers of 25 mW at 639 nm and 12 mW at 604 nm.
    • Recorded slope efficiencies of 5% at 639 nm and 6% at 604 nm.

    Conclusions:

    • Pr3+-doped LiYF4 planar waveguides are effective gain media for visible lasers.
    • LPE is a viable method for fabricating high-performance optical waveguides.
    • These results demonstrate the potential for compact, efficient visible lasers for various applications.