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Color-center laser continuously tunable from 1.67 to 2.46 microm.

I Schneider, S C Moss

    Optics Letters
    |August 29, 2009
    PubMed
    Summary
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    Researchers achieved laser action in a potassium chloride (KCl) crystal with sodium and lithium (F(2)(+))(A) centers. This new laser is tunable from 1.67 to 2.46 micrometers when pumped by a Nd:YAG laser.

    Area of Science:

    • Solid-state physics
    • Laser technology
    • Materials science

    Background:

    • Alkali halide crystals are widely studied for laser applications.
    • Color centers in crystals offer tunable laser properties.
    • Potassium chloride (KCl) is a promising host material for laser applications.

    Purpose of the Study:

    • To investigate laser action in a novel KCl crystal doped with sodium and lithium.
    • To characterize the tuning range and performance of the developed laser system.

    Main Methods:

    • Fabrication of a KCl crystal doped with sodium and lithium (F(2)(+))(A) centers.
    • Pumping the crystal with a 1.3-micrometer Neodymium-doped Yttrium Aluminum Garnet (Nd:YAG) laser.
    • Measuring the laser output across a range of wavelengths.

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    Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
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    Main Results:

    • Demonstrated laser action in the doped KCl crystal.
    • Achieved continuous tunability of the laser output from 1.67 to 2.46 micrometers.
    • Confirmed the effectiveness of Nd:YAG laser pumping for this system.

    Conclusions:

    • The developed KCl laser with (F(2)(+))(A) centers offers a continuously tunable source in the near-infrared region.
    • This crystal system presents a viable option for applications requiring tunable laser sources.
    • Further research can explore optimization of crystal growth and pumping schemes for enhanced performance.