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Diode-pumped Pr(3+):KY(3)F(10) red laser.

P Camy1, J L Doualan, R Moncorgé

  • 1Centre Interdisciplinaire de Recherches sur les ions et les Lasers, UMR 6637 CEA-CNRS-ISMRA, Université de Caen, Caen, France. patrice.camy@ensicaen.fr

Optics Letters
|June 5, 2007
PubMed
Summary

Researchers achieved room-temperature continuous-wave laser operation using a Pr(3+):KY(3)F(10) crystal. This novel laser emits red light at 644.5 nm, powered by a blue laser diode.

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Area of Science:

  • Laser Physics
  • Materials Science
  • Solid-State Lighting

Background:

  • Praseodymium-doped crystals are candidates for visible lasers.
  • Efficient room-temperature operation is crucial for practical applications.
  • Gallium Nitride (GaN) blue laser diodes offer compact and efficient pumping solutions.

Purpose of the Study:

  • To demonstrate room-temperature continuous-wave (CW) laser operation of a Pr(3+):KY(3)F(10) single crystal.
  • To investigate the performance of this laser system when pumped by a blue GaN laser diode.
  • To characterize key laser parameters such as output power, threshold, and efficiency.

Main Methods:

  • Utilized a Pr(3+):KY(3)F(10) single crystal as the gain medium.
  • Employed a blue GaN laser diode (emitting at 446 nm) as the pump source.

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  • Configured a non-optimized optical cavity with a 2.5% transmission output coupler.

    • Main Results:

    • Achieved the first reported room-temperature CW laser operation of Pr(3+):KY(3)F(10) at 644.5 nm.
    • Obtained a maximum output power of 39 mW at 644.5 nm.
    • Measured a laser threshold of 125 mW and a differential slope efficiency of 23%.

    Conclusions:

    • Pr(3+):KY(3)F(10) is a viable material for red laser generation.
    • Blue GaN laser diode pumping enables efficient room-temperature operation.
    • Further optimization of the optical cavity could enhance laser performance.